Home page of the microscope service parts, repair and spare parts online catalog - Sermik-Oplatek Mikroskopservice Dresden f.n.n.Z

Description of this part for the microscope.

ameters:
Manufacturer: Lomo
Model: PLAN 25x0.50 P
Original designation: ЛОМО ПЛАН 25х0,50 П
Magnification: 25x
Numerical aperture N.A.: 0.50
Tube length: 160 mm
Cover glass: yes, 0.17 mm thickness
Immersion oil: no - this is a dry objective
Focal length: 45 mm
Thread type: RMS
Additional designation: P (Cyrillic: П) indicates that this objective is designed for use with polarized light
Special features: built-in iris diaphragm
Year of manufacture: 1976

This objective has a standard RMS thread and TL=160 mm, which means it can be used with the vast majority of microscopes from virtually any manufacturer, including Olympus, Zeiss, Nikon, PZO, Carl Zeiss Jena, Reichert, Wild and many others.

The built-in iris diaphragm allows, among other things, precise centering of the objective, because in a polarizing microscope the following diaphragms may operate simultaneously:
- field diaphragm in the illuminator
- aperture diaphragm (or two aperture diaphragms) in the condenser
- iris diaphragm in the microscope objective
- iris diaphragm in the eyepiece head
and accurate centering of all of them relative to each other is very important in polarized-light observations.

Objectives marked "P" / "Pol" feature a special construction in which the lenses are mounted and cemented in a way that prevents mechanical stress. They can be used both for conventional brightfield microscopy and for observations in polarized light.

Description of this part for the microscope.

This is a round plastic cap with a metal insert, designed to cover the output port of the EPI illuminator. It is removed when an EPI fluorescence illuminator turret is installed (for example, on the Zeiss Photomicroscope III RS).

Please note that some versions of the Zeiss Universal microscope do not have an EPI reflected-light illuminator port.

The accompanying video, using a Zeiss Photomicroscope II as an example, shows exactly where this cap is located on the microscope and how it is installed and removed.

On the secondary market, many Zeiss Phomi (Photomicroscope) and Zeiss Universal microscopes are missing this cap. As a result, dust can enter the illumination system (in other words, the light path). Why is this cap often missing?
- first, it can be removed very easily, so over the years it may simply get lost
- secondly, the microscope body and the EPI fluorescence illuminator turret are often sold separately, so after the turret has been removed, the EPI illuminator port remains uncovered

Description of this part for the microscope.

Photomicroscope (Phomi) microscopes.

This cover ring contains a small screw that secures the ring in place so that it fits tightly around the joint between the two microscope components.

The accompanying video, using a Zeiss Photomicroscope II as an example, shows exactly where this cover ring is located on the microscope and how it is installed and removed.

On the secondary market, many Zeiss Phomi (Photomicroscope) and Zeiss Universal microscopes are missing this cover ring, which may allow dust to enter the optical system. Why is this cover ring often missing?
- first, it can be removed very easily, so over the years it may simply get lost
- secondly, the microscope body and the trino intermediate tube are often sold separately, so this cover ring frequently ends up being included in neither the first transaction nor the second

Description of this part for the microscope.

220V - 240V
Output: 8V
Output power: 20W
Power plug: European flat plug
Potentiometer: yes, smooth brightness adjustment

Designed for:
- Lomo OI-21 illuminator
- Lomo OI-35 illuminator
- illuminator used with MBC-9 and MBC-10 stereo microscopes

Also compatible with older black Lomo microscopes:
- MBB-1
- MIN-8
- EPI reflected-light illuminators, including those used with the Lomo METAM and Lomo MMU-3
- and many others

Some older Lomo microscopes (for example, the MBC-1 and MBC-2 stereo microscopes) may use different connectors, but they use the same Lomo 8V 20W BA15d lamps.

Description of this part for the microscope.

3
Numerical aperture N.A.: variable, from N.A. 0.16 to N.A. 1.4
Aperture diaphragm: no
Compatible microscope: Carl Zeiss Jena Lumipan

Mechanically, this condenser is mounted on a dovetail guide located beneath the microscope stage.

Several important notes:
- this pancratic condenser is compatible only with the Carl Zeiss Jena Lumipan microscope
- this condenser is not compatible with the Carl Zeiss Jena Nf or Carl Zeiss Jena Nu / Nu2 microscopes, even though the condenser used in those models is very similar
- this condenser does not include an iris diaphragm because the Carl Zeiss Jena Lumipan microscope has its aperture diaphragm located in the microscope base, directly below the condenser

In the last photograph, an arrow indicates which component is being described and where it is located in the microscope, making it easy to identify this part. In addition, the attached video shows how the individual components of this condenser move.

This condenser is often used as a "donor of parts" for DIY projects, for example:
- the Apl. 1.4 lens is often used to modify (upgrade) condensers with a lower numerical aperture N.A. in various microscopes
- the dark-field lens is very often used to build a custom cardioid condenser

Description of this part for the microscope.

of 45 mm.
- This version of the base can be used with transmitted light, although the light source is not included.
- A microscope stage can be mounted on this base - the required mounting holes are provided.
- The stand is equipped with a worm-thread drive.

This heavy and stable stand is often used for applications completely unrelated to hardness testers or microscopes, for example for mounting drill presses, lasers, or stable macro photography setups.

Description of this part for the microscope.

Zeiss Universal
- Zeiss Photomicroscope (the so-called Zeiss Phomi)
- Zeiss Ultraphot

This holder allows interchangeable microscope stages to be mounted, meaning stages that are not screwed directly to the microscope stand. It also features two centering screws.

This holder consists of two parts:
- the so-called stage "support", which is mounted onto a dovetail guide using a quick-release clamping mechanism
- and the circular stage holder attached to it

If this circular holder for the interchangeable stage is removed, other microscope stages that are not interchangeable but instead mounted with four screws can be attached to the "support".

The image gallery contains detailed photographs of this part together with its dimensions.
In the last photograph, an arrow indicates where this part is located inside the microscope.

Additionally, the video gallery contains two videos: the first presents this part from different angles, in close-up views, and demonstrates the movement of its moving components, while the second video shows, among other things, how this part is removed from the microscope body using a Zeiss Photomicroscope II as an example.

The Zeiss Universal, Zeiss Ultraphot, the earliest versions of the Zeiss Standard WL, and the first model of the Zeiss Photomicroscope were originally factory-equipped with this component in black.

The Zeiss Photomicroscope II, Zeiss Photomicroscope III, and the later versions of the Zeiss Standard WL were factory-equipped with this component in grey.

The colour of this component has no effect on compatibility. In other words, a component of either colour fits all of the microscope models listed above.

The component presented here is grey.
If you're looking for the gray version, it's listed in this database under number 99607.

Description of this part for the microscope.

called Zeiss Phomi)
- Zeiss Standard WL 89
- Zeiss Universal
- Zeiss Ultraphot (although the original holder in this model is black)

This complete module consists of the following parts:
- the section with the condenser focusing knob for height adjustment, mounted onto a dovetail guide using a quick-release clamping mechanism
- the condenser holder with a toothed rack, condenser retaining screw and two centering screws
- a swing-out holder for a 32 mm round filter
- a swing-out wide field lens used to provide even illumination of the specimen when observing with low-magnification objectives

This holder accepts condensers with a dovetail mount - it is not intended for condensers with a diameter of 37 mm or 39.5 mm.

The image gallery contains detailed photographs of this part together with its dimensions.
In the last photograph, an arrow indicates where this part is located inside the microscope.

Additionally, the video gallery contains two videos: the first presents this part from different angles, in close-up views, and demonstrates the movement of its moving components, while the second video shows, among other things, how to remove this condenser holder from the microscope body using a Zeiss Photomicroscope II as an example.

The Zeiss Universal, Zeiss Ultraphot, the earliest versions of the Zeiss Standard WL, and the first model of the Zeiss Photomicroscope were originally factory-equipped with this component in black.

The Zeiss Photomicroscope II, Zeiss Photomicroscope III, and the later versions of the Zeiss Standard WL were factory-equipped with this component in grey.

The colour of this component has no effect on compatibility. In other words, a component of either colour fits all of the microscope models listed above.

The component presented here is grey.
If you're looking for the gray version, it's listed in this database under number 99606.

Description of this part for the microscope.

it is a similar microscope body that differs only in a few details.

This Zeiss Phomi II microscope body includes:
- the coarse and fine focus block together with the focusing knobs
- the base (also called the foot or base) with the rear illuminator port, field diaphragm (iris diaphragm), and built-in filters
- the microscope arm with the intermediate tube mount (dovetail clamp), photographic film compartment, and all knobs and switches

When can a complete microscope body be useful?
- if you are assembling a microscope yourself and selecting every component so that the final configuration is exactly the way you want it
- if you have an older model (for example, a Zeiss Universal without EPI reflected-light capability) - replacing the stand effectively upgrades the microscope, while the remaining components can be transferred because they are compatible between these models
- if your microscope is damaged or in poor condition - in that case, this microscope body simply replaces the damaged part

Description of this part for the microscope.

Mechanically, this lens assembly is located inside the microscope base beneath the condenser. It is secured from below (inside the microscope base) with two screws. The lamp is located inside the microscope base directly beneath this light collector.

This component performs several functions:
- it collimates the light beam
- thanks to the built-in frosted diffuser, it homogenizes the light so that there are no bright or coloured hot spots caused by the lamp filament
- it also serves as the holder for round filters

The last photograph in the gallery shows the complete Olympus CHK microscope. An arrow indicates exactly which component is being offered and where it is located inside the microscope, making identification straightforward.

Description of this part for the microscope.

Olympus CHK / CH / CH-2 microscope models were supplied with a square stage that does not include an integrated XY mechanical stage for precise specimen movement. Such a mechanism is a separate (optional) accessory mounted to the side of the stage, and this is exactly the accessory shown and offered here.

Basic information:
Item: XY mechanical stage attachment for microscope stage
Manufacturer: Olympus
Manufacturer's descriptive name: Fixed type mechanical stage with right downward coaxial knob for plane stage fixed
For microscope: Olympus CHK
Mounting method: attached to the side of the stage with two screws
Required stage thickness: from 10 mm to 12 mm

Important compatibility information:
Originally, this mechanical stage attachment was used on the Olympus CHK microscope. I have personally also installed it on Olympus CH and Olympus CH-2 microscopes, and it is fully compatible with both models.

If CH and CH-2 microscopes were originally supplied with an XY mechanical stage, they used the Olympus CH-MVR attachment, but this CHK version fits as well.

In addition, this XY mechanism is compatible with other microscopes provided that the stage thickness is between 10 mm and 12 mm. I have personally verified compatibility with the stages of the following microscopes:
- Carl Zeiss Jena Eduval
- Carl Zeiss Jena Laboval-2
- Motic SFC100

The last photographs in the gallery show the complete Olympus CHK microscope. An arrow indicates exactly which component is being offered and where it is located within the microscope. The final photograph also shows an Olympus CH-2 microscope fitted with this XY mechanical stage attachment.

In addition, the video available in the video gallery shows this stage from various angles and demonstrates the movement of all mechanical parts.

At magnifications above 400×, manually moving the microscope slide becomes very difficult. This is exactly why XY mechanical stage attachments are used, allowing the specimen to be moved with great precision at magnifications such as 600× or 1000× using oil immersion.

Description of this part for the microscope.

service replacement part intended for repairing a microscope stage in which this particular component has been damaged. It is not a complete microscope stage.

These rotating stages were used in L-Stativ class microscopes, including:
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lumipan
- Carl Zeiss Jena Lu
- Carl Zeiss Jena Lr

Please remember that microscopes and microscope parts manufactured by the Soviet company LOMO were often clones of Carl Zeiss Jena products. Therefore, this component may also fit a Lomo microscope stage, but the dimensions should always be compared very carefully before purchasing.

Carl Zeiss Jena manufactured these rotating stages from the 1930s until approximately the end of the 1960s. During that period many small design details were modified, so it is very important to correctly identify the stage model from which this component was removed.

- every photo in the gallery includes a millimetre scale
- the last photos show the microscope stage disassembled, with an arrow indicating exactly where this component is located
- the final photos also show the complete Carl Zeiss Jena Lg microscope fitted with this stage

All of this allows you to visually confirm that this is exactly the component you are looking for.

Description of this part for the microscope.

Stativ class microscopes.

This is a service replacement part intended for repairing a microscope stage in which this particular component has been damaged. It is not a complete microscope stage.

These rotating stages were used in L-Stativ class microscopes, including:
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lumipan
- Carl Zeiss Jena Lu
- Carl Zeiss Jena Lr

Please remember that microscopes and microscope parts manufactured by the Soviet company LOMO were often clones of Carl Zeiss Jena products. Therefore, this component may also fit a Lomo microscope stage, but the dimensions should always be compared very carefully before purchasing.

Carl Zeiss Jena manufactured these rotating stages from the 1930s until approximately the end of the 1960s. During that period many small design details were modified, so it is very important to correctly identify the stage model from which this component was removed.

- every photo in the gallery includes a millimetre scale
- the last photos show the microscope stage disassembled, with an arrow indicating exactly where this component is located
- the final photos also show the complete Carl Zeiss Jena Lg microscope fitted with this stage

All of this allows you to visually confirm that this is exactly the component you are looking for.

Description of this part for the microscope.

This scale is engraved into a specially shaped brass plate and then silver-plated. After several decades of use, this microscope part often becomes worn and the scale markings may become faint or completely invisible. When restoring such a microscope stage, replacing this scale may therefore be necessary.

This is a service replacement part intended for repairing a microscope stage in which this particular component has been damaged. It is not a complete microscope stage.

These rotating stages were used in L-Stativ class microscopes, including:
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lumipan
- Carl Zeiss Jena Lu
- Carl Zeiss Jena Lr

Please remember that microscopes and microscope parts manufactured by the Soviet company LOMO were often clones of Carl Zeiss Jena products. Therefore, this component may also fit a Lomo microscope stage, but the dimensions should always be compared very carefully before purchasing.

Carl Zeiss Jena manufactured these rotating stages from the 1930s until approximately the end of the 1960s. During that period many small design details were modified, so it is very important to correctly identify the stage model from which this component was removed.

- every photo in the gallery includes a millimetre scale
- the last photos show the microscope stage disassembled, with an arrow indicating exactly where this component is located
- the final photos also show the complete Carl Zeiss Jena Lg microscope fitted with this stage

All of this allows you to visually confirm that this is exactly the component you are looking for.

Description of this part for the microscope.

used in Carl Zeiss Jena L-Stativ class microscopes.

Additionally, this microscope part features a locking lever. Once the lever is engaged, the control knob can no longer be turned, locking the upper plate of the microscope stage in the desired position. The operation of this mechanism can be seen in the video available in the video gallery.

This is a service replacement part intended for repairing a microscope stage in which this particular component has been damaged. It is not a complete microscope stage.

These rotating stages were used in L-Stativ class microscopes, including:
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lumipan
- Carl Zeiss Jena Lu
- Carl Zeiss Jena Lr

Please remember that microscopes and microscope parts manufactured by the Soviet company LOMO were often clones of Carl Zeiss Jena products. Therefore, this component may also fit a Lomo microscope stage, but the dimensions should always be compared very carefully before purchasing.

Carl Zeiss Jena manufactured these rotating stages from the 1930s until approximately the end of the 1960s. During that period many small design details were modified, so it is very important to correctly identify the stage model from which this component was removed.

- every photo in the gallery includes a millimetre scale
- the last photos show the microscope stage disassembled, with an arrow indicating exactly where this component is located
- the final photos also show the complete Carl Zeiss Jena Lg microscope fitted with this stage

All of this allows you to visually confirm that this is exactly the component you are looking for.

Description of this part for the microscope.

screw was removed from a Olympus CH microscope, but it will most likely fit most models of the CH series, for example:
- Olympus CHK
- Olympus CHB
- Olympus CK2
- Olympus CH
- Olympus CH-2

Description of this part for the microscope.

10x
Correction: Achromat
Numerical aperture N.A.: 0.24
Tube length: 160 mm
Parfocal length: 45 mm
Cover glass: not required, but may be used
Immersion: no
Thread: RMS
Info: Ph = Zernike phase contrast (green ring).

Compatible with the following phase contrast condensers:
- PZO K4Ph
- PZO K3Ph
- PZO K3Ph1
- PZO KS
- PZO KFF 2
- PZO KFL
- and even PZO K3PhZ

Here https://www.facebook.com/photo/?fbid=1262188377207557&set=a.462747092529893 you can see a very interesting test. It shows that if you use this PZO objective with the green ring (i.e. Zernike phase contrast) together with light-polarizing condensers (i.e. PZO KS or PZO K3PhZ), you will obtain an interesting blue background effect.

This objective can be used with any microscope from any manufacturer together with a compatible phase contrast condenser. Naturally, the microscope must support RMS objectives, TL=160 mm and FL=45 mm.

Description of this part for the microscope.

the microscope stage:
1. It fastens the stage to the stage holder - that is, indirectly to the microscope stand. This ring has a groove for the spring screw mounted centrally in that holder, as well as two cut-outs at the sides - for the centring screws. It is not, however, a dovetail - in Carl Zeiss Jena L-Stativ microscopes the stage is mounted on a wide ring.
2. Since it is a sliding ring, it is precisely this part that makes it possible to rotate the stage all the way around, even though this is not a polarizing stage.

This is a service part for the repair of a stage in which exactly this element has been damaged. It is not a complete microscope stage.

This ring contains a screw that makes it possible to lock the position, that is, to press the ring tight so that it does not rotate. This screw very often bends completely (for example during transport) or even breaks off. Breakage most commonly occurs when the sliding grease has dried out completely and someone tries to turn the stage by pushing on this screw.

Rotating stages of this kind were used in microscopes of the L-Stativ class, among others:
- Carl Zeiss Jena Lg
- Carl Zeiss Jena Lumipan
- Carl Zeiss Jena Lu
- Carl Zeiss Jena Lr

Remember that microscopes and microscope parts made by the Soviet company LOMO were often clones of Carl Zeiss Jena products. It is therefore possible that this element will also fit a Lomo microscope stage - but the dimensions of this part should definitely be compared very carefully first.

Carl Zeiss Jena produced such stages from the 1930s until roughly the end of the 1960s. During that period minor construction details were changed many times, so it is very important to correctly identify the model of the stage from which this element was removed.

- in the photo gallery a millimetre scale is visible next to every photograph
- the last photographs show a disassembled microscope stage, with an arrow indicating where this element is located in the stage
- the final photographs, in turn, show the complete Carl Zeiss Jena Lg microscope with this stage fitted

All of this makes it possible to confirm visually that this is exactly the element you are looking for.

Description of this part for the microscope.

Reichert-Jung microtomes were also marketed by American Optical (AO / AO-Spencer) - however, they are still the same instrument.

This page shows the central unit of the ultramicrotome. It is currently still complete and has not yet been dismantled for parts. In the future, this instrument will serve as a donor of spare parts for repairing other ultramicrotomes.

Please contact us if you are looking for any spare part for a Reichert-Jung Ultracut E / Leica Ultracut E ultramicrotome. Even if the required part is not currently visible in the photographs and has not yet been added to this database as a separate product, it is still inside this complete instrument and is available. Examples include:
- knobs and control knobs
- rack gears and gears
- guides, bearings and shafts
- housing parts
- electronic circuit boards and cables
- sensors and switches
- many other parts, from the complete upper tube assembly down to the smallest screw or spring

The listed components are only examples - other parts contained within this instrument may also be available.

In the video available in the video gallery you can see every control knob in motion, the movement of the upper tube assembly and specimen holder, as well as the overall condition of the instrument.

Description of this part for the microscope.

several functions:
- it protects the electrical components built into the microscope base
- it protects the bulb located inside the microscope base
- it acts as a heat sink, dissipating the heat generated by the bulb

The last photograph in the gallery shows the complete Olympus CHK microscope. An arrow indicates exactly which component this is and where it is located, making it easy to identify correctly.

A large proportion of Olympus CHK microscopes available on the second-hand market are missing this cover. During many years of use, this sheet metal cover had to be removed whenever the bulb was replaced, and it was often never reinstalled afterwards.

Owners solve this problem in various ways, often using thick cardboard or a plastic cover. However, only a metal cover also performs the function of a heat sink.

Description of this part for the microscope.

2

this module serves as the aperture diaphragm. The field diaphragm is built into the illumination path inside the microscope base.

At the same time, it provides a holder for 32 mm round filters. The video available in the gallery also demonstrates how a filter is inserted into this holder.

The sliding iris diaphragm mounted beneath the microscope condenser allows oblique illumination to be set, producing a three-dimensional image with enhanced contrast of transparent specimens (such as unstained cells). The resulting image is similar to differential interference contrast (DIC).

This component is known under various names, including:
- decenterable iris diaphragm
- decentering aperture diaphragm
- off-axis iris diaphragm
- eccentric iris diaphragm
- sliding iris diaphragm
- sliding iris
- oblique illumination condenser
- condenser with sliding iris
- oblique illumination module
- oblique illumination diaphragm
- offset iris
- Poor Man's DIC device

Note - this diaphragm DOES NOT FIT the Carl Zeiss Jena Lumipan microscope, even though it appears very similar at first glance.

Because this module is removable, it is missing from a large proportion of microscopes available on the second-hand market. During decades of use, these diaphragm modules were frequently lost.

In addition, they are often damaged and need replacement. The most common failures include:
- the protective glass covering the diaphragm becomes scratched or broken
- the diaphragm blades become bent or broken
- the screw used to decenter the diaphragm bends or breaks
- the return spring responsible for restoring the diaphragm to its centred position becomes damaged or is missing

Replacing the damaged assembly with the diaphragm module offered here solves these problems.

Description of this part for the microscope.

knobs
- coarse focus mechanism with the rack and control knobs
- microscope base with the rear illuminator port and a decenterable field diaphragm (iris diaphragm)
- stand arm with the microscope head mount and a dovetail guide for the interchangeable objective nosepiece
- dovetail guide with a rack and drive knob, together with the mounting module for a pankratic condenser or a clamp for mounting another condenser.

When can a complete microscope stand be useful?
- if you are building a microscope yourself and selecting every component so that the final configuration is exactly what you need
- if you own an older model (e.g. Carl Zeiss Jena Lg) - replacing the stand acts as an upgrade, while the remaining components are compatible between these models (except for the condenser)
- if your microscope is damaged or in poor condition - in this case the stand simply replaces the damaged microscope component
- if you need to replace only a single component in your damaged microscope (for example the fine focus block or the iris diaphragm), but decide to replace the entire stand instead

Contact us if you are looking for any part to repair a Carl Zeiss Jena Lumipan microscope. Even if the required part is not currently visible in the photographs or has not yet been added to this database as a separate product, it is located inside this complete microscope and is available. Examples include:
- knobs and control knobs
- racks and gears
- guides and shafts
- housing parts
- the iris diaphragm or its individual components
- illumination system components, deflecting mirror
- many other parts, from the complete upper tube down to the smallest screw or spring

The parts listed above are only examples - other components from this microscope stand may also be available.

Description of this part for the microscope.

light source to be connected. The lamp house is installed on the left side of the microscope, while the built-in mirror prism redirects the light beam into the EPI nosepiece.

Fluorescence light sources are most commonly connected to this mount, but it is completely universal. It contains no filters and can be used with LED, HBO, XBO, halogen or even classic incandescent lamp houses.

If the light source is lightweight (one of the newer models), it can be mounted without any additional supports. If a large, heavy lamp house is used, additional support frames are often employed to carry its weight (these are optional accessories and are not included).

In its current configuration, this mount accepts lamp houses with a 48 mm connection diameter. However, this mounting adapter can be removed, leaving a plain tube that can accept virtually any adapter, allowing almost any manufacturer's light source to be connected.

The last photograph in the gallery shows a Zeiss Photomicroscope III microscope with this lamp house mount installed. An arrow indicates its exact location, making it easy to identify this component.

The video gallery also contains two videos. The first presents this component from different angles and in close-up. The second demonstrates how to remove this EPI lamp house mount using a Zeiss Photomicroscope III microscope (commonly known as the Zeiss Phomi III) as an example.

Description of this part for the microscope.

body (that is, to the revolving magnification changer). It is secured with just a few small drops of adhesive.

This nameplate serves two purposes:
- it is positioned directly in front of the user's eyes, allowing the current total magnification to be identified immediately
- it protects the inside of the revolving magnification changer against dust and dirt entering the mechanism

Important: this nameplate does NOT fit the following microscopes:
- Carl Zeiss Jena Technival-2, because the magnification changer in this model has more magnification settings
- Carl Zeiss Jena Citoval / Citoval-2, because these models use a continuously variable ZOOM magnification system

Several decades have passed since the Technival series microscopes were manufactured, and these nameplates often simply fall off by themselves. They are also removed during servicing or repair of this microscope model, which is another common reason why they become lost.

Users solve the problem in various ways:
- they cover the "empty window" with almost anything
- they print a copy of the magnification table from a photograph of the original, glue it onto a piece of cardboard, and use this DIY replacement
- or they produce a replacement using a 3D printer, sometimes even with recessed lettering

However, if someone wants to have the original part, the only option is to find an original nameplate like the one offered here.

Description of this part for the microscope.

small drops of adhesive.

The nameplate fits all microscopes of the Biolar series based on the PZO Biolar B stand:
- PZO Biolar B
- PZO Biolar DIC
- PZO Biolar FL
- PZO Biolar Pol
- and all other variants
All of these nameplates are identical and differ only by the serial number.

Important: this nameplate does NOT fit the microscopes currently (as of 2026) sold as the Biolar C. These are ordinary Chinese OEM microscopes with a "Biolar" sticker.

Several decades have passed since the PZO Biolar series microscopes were manufactured, and these nameplates often simply fall off by themselves.

Description of this part for the microscope.

Zeiss Universal
- Zeiss Photomicroscope (the so-called Zeiss Phomi)
- Zeiss Ultraphot

This holder allows interchangeable microscope stages to be mounted, meaning stages that are not screwed directly to the microscope stand. It also features two centering screws.

This holder consists of two parts:
- the so-called stage "support", which is mounted onto a dovetail guide using a quick-release clamping mechanism
- and the circular stage holder attached to it

If this circular holder for the interchangeable stage is removed, other microscope stages that are not interchangeable but instead mounted with four screws can be attached to the "support".

The Zeiss Universal, Zeiss Ultraphot, the earliest versions of the Zeiss Standard WL, and the first model of the Zeiss Photomicroscope were originally factory-equipped with this component in black.

The Zeiss Photomicroscope II, Zeiss Photomicroscope III, and the later versions of the Zeiss Standard WL were factory-equipped with this component in grey.

The colour of this component has no effect on compatibility. In other words, a component of either colour fits all of the microscope models listed above.

The component presented here is black.
If you're looking for the gray version, it's listed in this database under number 99583.
There you'll also find a video demonstrating how to disassemble this item, i.e., how to remove it from the microscope stand.

Description of this part for the microscope.

called Zeiss Phomi)
- Zeiss Standard WL 89
- Zeiss Universal
- Zeiss Ultraphot

This complete module consists of the following parts:
- the section with the condenser focusing knob for height adjustment, mounted onto a dovetail guide using a quick-release clamping mechanism
- the condenser holder with a toothed rack, condenser retaining screw and two centering screws
- a swing-out holder for a 32 mm round filter
- a swing-out wide field lens used to provide even illumination of the specimen when observing with low-magnification objectives

This holder accepts condensers with a dovetail mount - it is not intended for condensers with a diameter of 37 mm or 39.5 mm.

The Zeiss Universal, Zeiss Ultraphot, the earliest versions of the Zeiss Standard WL, and the first model of the Zeiss Photomicroscope were originally factory-equipped with this component in black.

The Zeiss Photomicroscope II, Zeiss Photomicroscope III, and the later versions of the Zeiss Standard WL were factory-equipped with this component in grey.

The colour of this component has no effect on compatibility. In other words, a component of either colour fits all of the microscope models listed above.

The component presented here is black.
If you're looking for the gray version, it's listed in this database under number 99578.
There you'll also find a video demonstrating how to disassemble this item, i.e., how to remove it from the microscope stand.

Description of this part for the microscope.

23.2 mm

This centering telescope can be used for:
- DIC alignment (Differential Interference Contrast)
- Phase contrast alignment (centering phase rings)
- Aperture diaphragm inspection (iris diaphragm observation)Filament centering when setting up Köhler illumination

This is one of those microscope elements for which many different names are used. Among others:
- phase telescope
- phase contrast telescope
- phase alignment telescope
- phase adjustment telescope
- phase centering telescope
- phase contrast centering telescope
- phase contrast alignment telescope
- phase contrast adjustment telescope
- centering telescope
- condenser centering telescope
- condenser alignment telescope
- condenser adjustment telescope
- alignment telescope
- adjustment telescope
- inspection telescope
- aperture viewing telescope
- back focal plane viewing telescope
- auxiliary microscope
- phase contrast auxiliary microscope
- alignment auxiliary microscope
- centering auxiliary microscope
- adjustment auxiliary microscope
- auxiliary telescope
- centering scope
- alignment scope
- phase scope
- phase viewer
- phase contrast viewer
- phase centering eyepiece
- phase contrast eyepiece
- phase alignment eyepiece
- phase telescope eyepiece
- centering eyepiece
- condenser centering eyepiece
- adjustment eyepiece
- inspection eyepiece

Description of this part for the microscope.

inside the microscope base beneath the condenser. It is secured from above with three screws. The collector housing also incorporates a holder for 32 mm round filters.

This component performs several functions:
- it collimates the light beam
- it also serves as a holder for round filters
- it redirects the horizontal light beam coming from the lamp house vertically upwards
- the flip-out wide field lens provides even illumination of the entire specimen when using low-magnification objectives

Replacement of this collector in a Reichert Zetopan microscope may be necessary in the following situations, among others:
- if this component is missing because someone removed it, for example during an unfinished repair
- if the upper protective glass of the collector has been broken
- if the mechanism operating the flip-out wide field lens has been damaged
- if - as often happens - the mirror prism has been damaged, broken, or its reflective surface has deteriorated through oxidation

Information from the manufacturer's English-language catalogue "Zetopan Research Microscope. Price List, Effective December 1, 1976":
- This component belongs to the microscope stand. The catalogue number of the stand is: 9 90 00 01

The last photographs in the gallery show the base of a Reichert Zetopan microscope (in this case the older black version). An arrow indicates exactly which component it is and where it is located. The collector is shown both from the outside and in its installed position inside the microscope base. This makes it easy to identify the component correctly.

Description of this part for the microscope.

to manufacture such a protective cover for the base of a Reichert Zetopan microscope themselves, here are its dimensions:
Length: 223 mm
Width: 156 mm
Sheet thickness: 1.5 mm

The base of the Reichert Austria Zetopan microscope contains the optical light path, and from time to time this area requires maintenance, especially cleaning. Since Reichert Zetopan microscopes are now 50-60 years old, it is not uncommon to encounter examples where this cover has been lost over the years.

Without this protective cover, contaminants can enter the optical light path and reach the mirror prism of either the transmitted-light or reflected-light illumination system, which may result in reduced image quality.

Information from the manufacturer's English-language catalogue "Zetopan Research Microscope. Price List, Effective December 1, 1976":
- This component belongs to the microscope stand. The catalogue number of the stand is: 9 90 00 01

Description of this part for the microscope.

vibration absorbers.

Information from the manufacturer's English-language catalogue "Zetopan Research Microscope. Price List, Effective December 1, 1976":
- This component belongs to the microscope stand. The catalogue number of the stand is: 9 90 00 01

Description of this part for the microscope.

designed for the Reichert Zetopan microscope to be connected:
- the older-style lamp house with a large incandescent bulb
- the Lux-US halogen lamp house
- the lamp adapter (lamp splitter) used for connecting both the standard illumination system and the fluorescence illumination system at the same time

Information from the manufacturer's English-language catalogue "Zetopan Research Microscope. Price List, Effective December 1, 1976":
- This component belongs to the microscope stand. The catalogue number of the stand is: 9 90 00 01

In the last photograph in the gallery, an arrow indicates exactly which component it is and where it is located in the microscope. This allows the component to be identified unambiguously.

Description of this part for the microscope.

interface for the main optical tube, with the photo port on one side and the dovetail rail for attaching the objective nosepiece on the other.

The clamping screw securing this component in the Reichert Austria Zetopan microscope very often breaks or gets lost. When this happens, the specially shaped clamping piece usually falls out as well, making a microscope service part such as the one presented here necessary.

Information from the manufacturer's English-language catalogue "Zetopan Research Microscope. Price List, Effective December 1, 1976":
- This component belongs to the microscope stand. The catalogue number of the stand is: 9 90 00 01

In the last photographs in the gallery, an arrow indicates exactly which component is being shown and where it is located in the microscope. This makes it possible to identify this microscope part unambiguously.

Description of this part for the microscope.

Reichert Neozet microscopes, these rails serve only a decorative purpose.

However, the Reichert Zetopan microscope was also available in a version equipped for fluorescence illumination. The large size of the illumination unit used (for example the Binolux 3 model), which was mounted at the rear of the microscope, made it necessary to raise the entire microscope. For this purpose, Reichert Austria offered a special raising base (referred to by the manufacturer as the "sub-base", catalogue number 9 18 87 01). This raising base was equipped with retaining clips that attached to the microscope base, and those clips engaged precisely with the chrome-plated side rails presented here.

The particular rails presented here were removed from a Reichert Zetopan microscope. To the best of my knowledge, they are also compatible with the Reichert Neozet model.

Although two identical rails are mounted on the microscope base, I offer each rail separately. Very often only one rail breaks, so the user needs to replace only a single one. Please note that the chrome plating on the rails presented here is incomplete in places due to the age of these components.

Information from the manufacturer's English-language catalogue "Zetopan Research Microscope. Price List, Effective December 1, 1976":
- This component belongs to the microscope stand. The catalogue number of the stand is: 9 90 00 01

Description of this part for the microscope.

and darkfield, but it is also suitable for transmitted-light brightfield observation.

Nikon TU Plan Fluor objectives are frequently used for macrophotography and ultra-macrophotography. When combined with a Nikon tube lens (Nikon tube lens) or a Rodenstock Apo-Gerogon 210 mm lens, they provide outstanding image quality when connected to a camera.

Basic specifications of the Nikon CFI TU Plan Fluor 5x/0.15 microscope objective:
Manufacturer: Nikon
Manufacturer catalogue number: MUE42050
Marking on the objective: TU Plan Fluor 5x/0.15 A ∞/0 EPI D OFN25 WD18 MUE42050
Magnification: 5x
Numerical aperture N.A.: 0.15
Colour correction: Plan Fluor
Optical correction: infinity
Infinity system: CFI 60
Field number OFN: OFN25
Working distance WD: 18 mm
Cover glass: not required
Immersion: no - this is a dry objective
Operating mode in reflected-light EPI microscopy: brightfield (BF) or darkfield (DF)
Thread: M32
Compatibility with microscopes equipped with an M25-thread nosepiece: yes, by using the MXA23017 adapter or by replacing the nosepiece with the Nikon L-NBD5 or LV-NBD5 model

This objective is compatible with microscopes designed for reflected-light EPI microscopy and equipped with an M32-thread nosepiece, for example:
- Nikon Eclipse L
- Nikon Eclipse LV
- Nikon MM-400 and MM-800 toolmakers microscopes

This objective is also compatible with microscopes in which the M25-thread nosepiece can be replaced with an M32-thread objective nosepiece, namely the Nikon L-NBD5 or LV-NBD5. These include, for example:
- Nikon Eclipse E600
- Nikon Eclipse E800
- Nikon Eclipse 50i / 55i
- Nikon Eclipse 80i / 90i
- Nikon Eclipse Ci
- Nikon Eclipse Ni
A suitable reflected-light EPI illuminator can also be installed on these microscopes to take full advantage of the capabilities of this objective.

For other Nikon CFI60 microscope models, for example:
- Eclipse E200
- Eclipse E400
- Eclipse Si
- Eclipse TI / TE / TS series inverted microscopes
the MXA23017 adapter can be used, allowing M32-thread objectives to be mounted in an M25-thread nosepiece - therefore the objective presented here can also be used.

Description of this part for the microscope.

microscopes:
- Zeiss Standard WL
- Zeiss Universal
- Zeiss Photomicroscope I
- Zeiss Photomicroscope II
- Zeiss Photomicroscope III RS

Mechanically, this toothed rack is located on the focusing block (gear block), beneath the dovetail guide. The microscope stage and microscope condenser are mounted on this guide.

Description of this part for the microscope.

to be connected to a Zeiss (Opton) OPMI surgical microscope.

The F=340 photo adapter fits the following surgical microscopes:
- Zeiss OPMI 1 / Opton OPMI 1
- Zeiss OPMI 3 / Opton OPMI 3
- Zeiss OPMI 6 / Opton OPMI 6
- Zeiss OPMI Vario / Opton OPMI Vario
- Zeiss OPMI Pico / Opton OPMI Pico

Manufacturer: Zeiss
Model: F=340
Catalogue number: 000000-1022-973
Catalogue name: Photoadapter f=340 T2
Photographic thread: T2, i.e. M42x0.75 (42 mm diameter, 0.75 mm thread pitch)
Tube diameter for mounting to the microscope: 34 mm
Built-in optics: yes

This adapter is NEW (even if the fixed description elements elsewhere on the website state that it is used).

Note regarding the manufacturer's name: Carl Zeiss West Germany marketed its OPMI surgical microscopes (and their accessories) under the following names:
- Zeiss OPMI
- Opton OPMI
These are the same microscopes and the same components.
When the name "Opton" appears, it is printed on the label, while the word "Zeiss" underneath has often been washed off, worn away or scraped off at the factory. The reason for the deliberate removal of the "Zeiss" name and the use of the "Opton" name was an agreement with Carl Zeiss Jena, which operated in the former Eastern Bloc (communist bloc), to avoid using the name "Zeiss" on export products.

Description of this part for the microscope.

and darkfield, but it is also suitable for transmitted-light brightfield observation.

Nikon TU Plan Fluor objectives are frequently used for macrophotography and ultra-macrophotography. When combined with a Nikon tube lens (Nikon tube lens) or a Rodenstock Apo-Gerogon 210 mm lens, they provide outstanding image quality when connected to a camera.

Basic specifications of the Nikon CFI TU Plan Fluor 20x/0.45 microscope objective:
Manufacturer: Nikon
Manufacturer catalogue number: MUE42200
Marking on the objective: TU Plan Fluor 20x/0.45 A ∞/0 EPI D OFN25 WD4,5 MUE42200
Magnification: 20x
Numerical aperture N.A.: 0.45
Colour correction: Plan Fluor
Optical correction: infinity
Infinity system: CFI 60
Field number OFN: OFN25
Working distance WD: 4,5 mm
Cover glass: not required
Immersion: no - this is a dry objective
Operating mode in reflected-light EPI microscopy: brightfield (BF) or darkfield (DF)
Thread: M32
Compatibility with microscopes equipped with an M25-thread nosepiece: yes, by using the MXA23017 adapter or by replacing the nosepiece with the Nikon L-NBD5 or LV-NBD5 model

This objective is compatible with microscopes designed for reflected-light EPI microscopy and equipped with an M32-thread nosepiece, for example:
- Nikon Eclipse L
- Nikon Eclipse LV
- Nikon MM-400 and MM-800 toolmakers microscopes

This objective is also compatible with microscopes in which the M25-thread nosepiece can be replaced with an M32-thread objective nosepiece, namely the Nikon L-NBD5 or LV-NBD5. These include, for example:
- Nikon Eclipse E600
- Nikon Eclipse E800
- Nikon Eclipse 50i / 55i
- Nikon Eclipse 80i / 90i
- Nikon Eclipse Ci
- Nikon Eclipse Ni
A suitable reflected-light EPI illuminator can also be installed on these microscopes to take full advantage of the capabilities of this objective.

For other Nikon CFI60 microscope models, for example:
- Eclipse E200
- Eclipse E400
- Eclipse Si
- Eclipse TI / TE / TS series inverted microscopes
the MXA23017 adapter can be used, allowing M32-thread objectives to be mounted in an M25-thread nosepiece - therefore the objective presented here can also be used.

Description of this part for the microscope.

improves camera sensor coverage and helps eliminate vignetting when using a photographic camera (e.g. a DSLR) or a digital camera connected to a Zeiss (Opton) OPMI surgical microscope via a photo adapter.

Mechanically, this objective is installed between the photo adapter and the camera. It also incorporates a holder for an additional 30 mm filter positioned in the optical path (for example, a polarizing filter, neutral-density filter or colour filter).

Basic specifications of this auxiliary objective:
Manufacturer: Zeiss
Note regarding the Zeiss brand: the objective bears the "Opton" logo - this was the trade name under which Zeiss exported its products (see the explanation at the end of this product description)
Marking: Opton 1.6× T* (West Germany)
Manufacturer number: most probably 30 16 68 (alternative notation: 301668) - note - not confirmed in the manufacturer's documentation
Magnification: 1.6×
Anti-reflection coating: yes - multi-layer T* coating (red star), the successor to the earlier single-layer T coating. It reduces reflections and improves contrast in the photographic optical path
Mounting interface: 48 mm dovetail (male on one side, female on the other)
Filter holder: yes, for a round 30 mm filter

This objective is compatible with every photo adapter, beam splitter or auxiliary observation tube for Zeiss OPMI / Opton OPMI surgical microscopes equipped with a 48 mm dovetail connection.

Important:
- this is not a camera lens
- this is not an objective for a Zeiss OPMI surgical microscope
- this is not a Barlow lens for a Zeiss OPMI microscope objective
- this is not a front-mounted auxiliary objective - it is not mounted onto the main objective of a Zeiss OPMI surgical microscope

Note regarding the manufacturer's name: Carl Zeiss West Germany marketed its OPMI surgical microscopes (and their accessories) under the following names:
- Zeiss OPMI
- Opton OPMI
These are the same microscopes and the same components.
When the name "Opton" appears, it is printed on the label, while the word "Zeiss" underneath has often been washed off, worn away or scraped off at the factory. The reason for the deliberate removal of the "Zeiss" name and the use of the "Opton" name was an agreement with Carl Zeiss Jena, which operated in the former Eastern Bloc (communist bloc), to avoid using the name "Zeiss" on export products.

Description of this part for the microscope.

mounting interface for the main optical tube, with the photo port on one side and the dovetail rail for attaching the objective nosepiece on the other.

In the last photographs in the gallery, an arrow indicates exactly which component is being shown and where it is located in the microscope. This makes it possible to identify this microscope part unambiguously.

Description of this part for the microscope.

It is an optional accessory for Carl Zeiss West Germany microscopes (as well as those marketed under the Opton West Germany brand). It allows the user to set the exposure time, ISO value and similar parameters.

Basic specifications of the Zeiss photomicrography controller:
Model: Zeiss MC 63
Catalogue name: Steuerpult
Catalogue number: 47 74 25 - 9903 (alternative notation: 477425-9903)
Name in the English-language catalogue: Exposure control MA
Housing colour: grey

Zeiss MC 63 is an entire family of devices differing in version, feature set, number of controls, housing colour and catalogue number. Photomicrography systems incorporating this controller were supplied with many different Zeiss microscope models. There is no fixed relationship between a particular MC 63 catalogue number and a specific microscope model.

Please also compare it with the otherwise identical Zeiss MC 63 featuring a white housing. It bears catalogue number 45 60 45 and is listed in the database under number 99632.

Description of this part for the microscope.

It is an optional accessory for Carl Zeiss West Germany microscopes (as well as those marketed under the Opton West Germany brand). It allows the user to set the exposure time, ISO value and similar parameters.

Basic specifications of the Zeiss photomicrography controller:
Model: Zeiss MC 63
Catalogue name: Steuerpult
Catalogue number: 45 60 45 (alternative notation: 456045)
Name in the English-language catalogue: Exposure control MA
Housing colour: white

Zeiss MC 63 is an entire family of devices differing in version, feature set, number of controls, housing colour and catalogue number. Photomicrography systems incorporating this controller were supplied with many different Zeiss microscope models. There is no fixed relationship between a particular MC 63 catalogue number and a specific microscope model.

Please also compare it with the otherwise identical Zeiss MC 63 featuring a grey housing. It bears catalogue number 47 74 25 - 9903 and is listed in the database under number 99631.

Description of this part for the microscope.

improves camera sensor coverage and helps eliminate vignetting when using a photographic camera (e.g. a DSLR) or a digital camera connected to a Zeiss (Opton) OPMI surgical microscope via a photo adapter.

Mechanically, this objective is installed between the photo adapter and the camera.

Basic specifications of this auxiliary objective:
Manufacturer: Zeiss
Marking: 2x West Germany 30 15 69
Manufacturer number: 30 15 69
Magnification: 2x
Anti-reflection coating: yes
Mounting interface: 48 mm dovetail (male on one side, female on the other)

This objective is compatible with every photo adapter, beam splitter or auxiliary observation tube for Zeiss OPMI / Opton OPMI surgical microscopes equipped with a 48 mm dovetail connection.

Important:
- this is not a camera lens
- this is not an objective for a Zeiss OPMI surgical microscope
- this is not a Barlow lens for a Zeiss OPMI microscope objective
- this is not a front-mounted auxiliary objective - it is not mounted onto the main objective of a Zeiss OPMI surgical microscope.

Description of this part for the microscope.

and darkfield, but it is also suitable for transmitted-light brightfield observation.

Nikon TU Plan Fluor objectives are frequently used for macrophotography and ultra-macrophotography. When combined with a Nikon tube lens (Nikon tube lens) or a Rodenstock Apo-Gerogon 210 mm lens, they provide outstanding image quality when connected to a camera.

Basic specifications of the Nikon CFI TU Plan Fluor 50x/0.80 microscope objective:
Manufacturer: Nikon
Manufacturer catalogue number: MUE42500
Marking on the objective: TU Plan Fluor 50x/0.80 A ∞/0 EPI D OFN25 WD1,0 MUE42500
Magnification: 50x
Numerical aperture N.A.: 0.80
Colour correction: Plan Fluor
Optical correction: infinity
Infinity system: CFI 60
Field number OFN: OFN25
Working distance WD: 1,0 mm
Cover glass: not required
Immersion: no - this is a dry objective
Operating mode in reflected-light EPI microscopy: brightfield (BF) or darkfield (DF)
Thread: M32
Compatibility with microscopes equipped with an M25-thread nosepiece: yes, by using the MXA23017 adapter or by replacing the nosepiece with the Nikon L-NBD5 or LV-NBD5 model

This objective is compatible with microscopes designed for reflected-light EPI microscopy and equipped with an M32-thread nosepiece, for example:
- Nikon Eclipse L
- Nikon Eclipse LV
- Nikon MM-400 and MM-800 toolmakers microscopes

This objective is also compatible with microscopes in which the M25-thread nosepiece can be replaced with an M32-thread objective nosepiece, namely the Nikon L-NBD5 or LV-NBD5. These include, for example:
- Nikon Eclipse E600
- Nikon Eclipse E800
- Nikon Eclipse 50i / 55i
- Nikon Eclipse 80i / 90i
- Nikon Eclipse Ci
- Nikon Eclipse Ni
A suitable reflected-light EPI illuminator can also be installed on these microscopes to take full advantage of the capabilities of this objective.

For other Nikon CFI60 microscope models, for example:
- Eclipse E200
- Eclipse E400
- Eclipse Si
- Eclipse TI / TE / TS series inverted microscopes
the MXA23017 adapter can be used, allowing M32-thread objectives to be mounted in an M25-thread nosepiece - therefore the objective presented here can also be used.

Description of this part for the microscope.

supply:
Manufacturer: Carl Zeiss
Model: NAG 2...12V 100W
Catalogue number: 39 25 85
Input: 100-110-120-127-220-240 V
Output: 12 V
Output power: 100 W
Power connector: separate computer-type power cable
Potentiometer: yes, smooth brightness adjustment

Designed for any microscope illuminator using a light source (lamp) rated at up to 100 W and operating at 12 V. It is most commonly used with external HAL 100 halogen illuminators (so-called Lampenhaus units), for example in reflected-light EPI illuminators.

This power supply can be used with illuminators and microscopes from any manufacturer. Here are several configurations verified in practice:
- compatible with the PZO Biolar DIC microscope fitted with the PZO OH-1 halogen illuminator, replacing the PZO ZM-100 or PZO ZH-100 power supply
- if the internal power supply in the base of an Olympus BH-2 BHS microscope fails, the original halogen illuminator can be powered using this external Zeiss power supply
- compatible with the large external halogen illuminator used for reflected-light EPI illumination on Carl Zeiss Jena Amplival Pol and Vertival microscopes
- also compatible with the Reichert Zetopan microscope equipped with the LUX-US 12 V 100 W halogen illuminator

Note - different manufacturers and different illuminators may use different pin spacing in their 12 V connectors. It may therefore be necessary to modify the connector in order to connect it to this Zeiss power supply.

Description of this part for the microscope.

supply:
Manufacturer: Carl Zeiss
Model: NAG 6V 20W stab.
Catalogue number: 45 84 15 - 9901
Input: 100-120-230-240 V
Output: 6 V
Output power: two outputs. It can supply either 2 × 10 W or 1 × 20 W
Power connector: separate computer-type power cable
Potentiometer: yes, smooth adjustment

This power supply has a maximum output power of 20 W and provides two outputs, allowing two 10 W illuminators to be connected and operated simultaneously.

However, it is a universal power supply and can be used with any microscope illuminator using a light source (lamp) rated at up to 20 W and operating at 6 V. Since most Zeiss microscopes use 6 V 15 W lamps, this power supply is suitable for virtually every microscope equipped with such illumination.

This power supply is most commonly used with microscopes employing 6 V 10 W halogen lamps, where both the transmitted-light illuminator and the reflected-light EPI illuminator are connected to the same power supply. Examples include:
- Zeiss D / DR / DRC / SV (Stemi) stereo microscopes
- Zeiss KF-2 biological microscope
- Zeiss ID2 inverted microscope

Special illuminators designed to work with this power supply were even manufactured for the Zeiss D / DR / DRC stereo microscopes:
- transmitted-light base "Zusatz für Durchlicht" with a 10 W halogen lamp
- auxiliary illuminators "Leuchte 10" / "Leuchte 10 S" with a 10 W halogen lamp
- vertical illuminator "Epileuchte" with a 15 W incandescent lamp

"Leuchte 10S" illuminators on a flexible arm, together with this particular power supply, are frequently used as a source of side reflected illumination for the Zeiss KF-2 biological microscope.

Examples of other microscopes whose 6 V 15 W illumination is compatible with this power supply:
- Zeiss Standard 16 / WL / GFL
- Zeiss Universal / Photomicroscope
- PZO Biolar
- PZO MST-130 / 131
- Carl Zeiss Jena Ergaval / Amplival
- Carl Zeiss Jena SM-xx
- this power supply can also be used externally to power the halogen illuminator of Carl Zeiss Jena Jenamed microscopes if the internal power supply fails (Jenamed uses a 6 V 20 W halogen lamp)

Note - different manufacturers and different illuminators may use different pin spacing in their 6 V connectors. It may therefore be necessary to modify the connector in order to connect it to this Zeiss power supply.

Description of this part for the microscope.

and darkfield, but it is also suitable for transmitted-light brightfield observation.

Nikon TU Plan Fluor objectives are frequently used for macrophotography and ultra-macrophotography. When combined with a Nikon tube lens (Nikon tube lens) or a Rodenstock Apo-Gerogon 210 mm lens, they provide outstanding image quality when connected to a camera.

Basic specifications of the Nikon CFI TU Plan Fluor 100x/0.90 microscope objective:
Manufacturer: Nikon
Manufacturer catalogue number: MUE42900
Marking on the objective: TU Plan Fluor 100x/0.90 A ∞/0 EPI D OFN25 WD1,0 MUE42900
Magnification: 100x
Numerical aperture N.A.: 0.90
Colour correction: Plan Fluor
Optical correction: infinity
Infinity system: CFI 60
Field number OFN: OFN25
Working distance WD: 1,0 mm
Cover glass: not required
Immersion: no - this is a dry objective
Operating mode in reflected-light EPI microscopy: brightfield (BF) or darkfield (DF)
Thread: M32
Compatibility with microscopes equipped with an M25-thread nosepiece: yes, by using the MXA23017 adapter or by replacing the nosepiece with the Nikon L-NBD5 or LV-NBD5 model

This objective is compatible with microscopes designed for reflected-light EPI microscopy and equipped with an M32-thread nosepiece, for example:
- Nikon Eclipse L
- Nikon Eclipse LV
- Nikon MM-400 and MM-800 toolmakers microscopes

This objective is also compatible with microscopes in which the M25-thread nosepiece can be replaced with an M32-thread objective nosepiece, namely the Nikon L-NBD5 or LV-NBD5. These include, for example:
- Nikon Eclipse E600
- Nikon Eclipse E800
- Nikon Eclipse 50i / 55i
- Nikon Eclipse 80i / 90i
- Nikon Eclipse Ci
- Nikon Eclipse Ni
A suitable reflected-light EPI illuminator can also be installed on these microscopes to take full advantage of the capabilities of this objective.

For other Nikon CFI60 microscope models, for example:
- Eclipse E200
- Eclipse E400
- Eclipse Si
- Eclipse TI / TE / TS series inverted microscopes
the MXA23017 adapter can be used, allowing M32-thread objectives to be mounted in an M25-thread nosepiece - therefore the objective presented here can also be used.

Description of this part for the microscope.

Ph 10/0.25 160/0.17 phase objective
- Ph 20/0.40 160/0.17 phase objective
- Ph 40/0.65 160/0.17 phase objective
- Oil Ph 100/1.25 160/0.17 oil immersion phase objective
- centering telescope (auxiliary microscope) for a 23.2 mm eyepiece tube

Specifications of the objectives included in the kit:
Correction: achromatic
Tube length TL: 160 mm
Focal length FL: 45 mm
Thread: RMS (20.3 mm)

This kit is originally supplied with AmScope microscopes of the "490" series (the T490 trinocular microscope and the B490 binocular microscope). However, since the condenser has a standard 37 mm mounting diameter and the objectives use the standard RMS thread with TL = 160 mm, this kit can also be used with dozens of microscope models from other manufacturers, provided they are built to these standards.

Description of this part for the microscope.

In Carl Zeiss Standard series microscopes (with the exception of the Standard Junior teaching microscope), the condenser is not mounted in a circular clamp. Instead, it is fitted with a circular dovetail ring that slides into the condenser mounting guide.

This mounting interface is used on, among others, the following microscope models:
- Zeiss Standard 14 / 16 / 18 / GFL
- Zeiss Standard WL / WL 89
- Zeiss Standard 20 / 25 / 25 ICS
- Zeiss Universal
- Zeiss Photomicroscope I / II / III RS
- Zeiss Ultraphot

The ring has a diameter of 41.3 mm and three mounting holes used to attach it to the condenser. It also features a tapered recess that engages with the locating pin in the condenser holder, ensuring correct positioning of the condenser.

When attached to a condenser made by another manufacturer, this ring makes it possible to use, for example, the PZO KPI-2 DIC condenser and dozens of other condensers on Zeiss Standard-class microscopes.

Note regarding the mounting diameter: during nearly 50 years of production of this microscope series, the dovetail diameter was always approximately 42 mm, but it was never exactly identical. Depending on the production year, the material (plastic, aluminium or brass), and the condenser type (classic Abbe condenser or phase contrast disc condenser), the actual diameter may range from just over 41 mm to almost 43 mm. This relatively large tolerance is a consequence of the condenser holder design. The holder incorporates spring loading, a locating pin and centring/locking screws. As a result, condensers fitted with a mounting ring between approximately 41 mm and 43 mm in diameter can almost always be mounted securely and remain well centred.

Description of this part for the microscope.

microscope base. It transfers the light beam from the illuminator, homogenises it (the image of the filament is diffused by means of a diffuser), and then properly collimates it using a collimating lens. The prepared light beam is then directed to the deflecting mirror (this is a separate microscope component).

This is part of the transmitted-light optical path. The diffuser (frosted ground glass) and the collimating lens are housed inside a metal enclosure that serves as a heat sink for the halogen lamp. The complete assembly forms the illuminator housing.

This particular collector with frosted ground glass was removed from a Carl Zeiss Photomicroscope (also known as Zeiss PM / Zeiss Phomi).
It fits the following microscopes (this is not a complete list):
- Zeiss Photomicroscope (Zeiss PM / Phomi)
- Zeiss Photomicroscope II (Zeiss PM2 / Phomi II)
- Zeiss Photomicroscope III RS (Zeiss PM3 RS / Phomi III)
- Zeiss Universal
- Zeiss Ultraphot
- most likely also Zeiss Standard 16 / 18 / WL / WL 89 / GFL microscopes

VERY IMPORTANT: This component is intended for the 6V 15W incandescent illuminator. Zeiss microscopes may be equipped either with a 6V 15W incandescent illuminator (a tubular illuminator inserted into the microscope base) or with an external halogen Lampenhaus mounted to the rear of the microscope base. Microscope versions equipped with a halogen illuminator use a different illuminator holder than the one presented here.

Other names used for this component:
- illuminator holder with frosted filter
- illuminator tube
- illuminator holder with frosted ground glass
- sometimes the foreign-language term "Lampenhaus" is also used, although it is not a precise name for this component

The last photographs in the gallery show the base of a Zeiss Photomicroscope III RS. Arrows indicate exactly which component is being offered and where it is located inside the microscope base, making it possible to identify this component unambiguously.

Description of this part for the microscope.

phase contrast and darkfield) allow a phase contrast condenser to be configured individually. This makes it possible to use exactly the observation techniques and exactly the microscope objectives required.

Basic parameters of this phase annulus:
Manufacturer: Carl Zeiss (Oberkochen, West Germany)
Condenser marking: "2"
For objectives: marked "Ph2", i.e. magnifications from 16x to 40x
Material: glass mounted in a metal retaining ring with flange
Outside diameter of the retaining ring: 22 mm
Phase annulus glass diameter: 16 mm
Height of the retaining ring: 3.5 mm

Important: this microscope component (phase annulus / phase diaphragm) is not intended for any specific microscope model. It is a component used to upgrade or repair a microscope phase contrast condenser. It is not intended for upgrading or repairing one specific condenser model. Many Carl Zeiss condenser models have a suitable opening into which this phase annulus can be inserted.

This particular phase annulus was removed from a fluorescence phase contrast condenser - an older version of the Zeiss condenser P/N 46 52 78. Before installing it in your condenser, carefully compare the shape of its housing and the dimensions of the retaining ring.

The last photograph in the gallery shows the turret disc of a Zeiss phase contrast condenser. An arrow indicates this very phase annulus - the one offered here - already installed.

Description of this part for the microscope.

removed from a Zeiss Standard GFL microscope, but it also fits condenser holders used, among others, in the following microscopes:
- Zeiss Standard 14 / 16 / 18
- Zeiss Standard WL / WL 89
- Zeiss Universal
- Zeiss Photomicroscope (Zeiss PM / Phomi - all models)
- Zeiss Ultraphot

In these microscope models, the condenser has a dovetail mounting ring. This dovetail includes a notch into which the spring-loaded screw presented here engages. You can see what this mounting ring looks like and how the notch is shaped in the photo gallery of item No. 99625 in this database.

Description of this part for the microscope.

Zeiss Standard GFL microscope, but it also fits condenser holders used, among others, in the following microscopes:
- Zeiss Standard 14
- Zeiss Standard 16
- Zeiss Standard 18
- Zeiss Standard WL / WL 89

This filter holder accepts filters with a diameter of 32 mm.

This is not only a replacement service part used when the original filter holder has been damaged (for example, if the spring tab or retaining latch has broken). Many owners of Carl Zeiss Standard microscopes modify their microscopes by attaching another (additional) filter holder to the condenser holder. This is exactly the component required for such a DIY modification.

This filter holder can also be attached to the condenser holder of the following microscopes:
- Zeiss Universal
- Zeiss Photomicroscope
- Zeiss Ultraphot
However, these microscope models were originally equipped with a different type of filter holder.

The last photographs in the gallery show examples of use - this filter holder fitted with a blue filter and with a DIY insert made using a 3D printer.

Description of this part for the microscope.

condensers.

Basic parameters of this clear glass insert:
Manufacturer: Carl Zeiss (Oberkochen, West Germany)
Material: glass mounted in a metal retaining ring with flange
Outside diameter of the retaining ring: 22 mm
Diameter of the clear glass disc: 16 mm
Height of the retaining ring: 3.5 mm

Below are some example applications for this clear glass blank. It can be printed or fitted with, among others:
- a phase annulus or darkfield annulus matching the original one that was installed in the condenser but has become damaged
- an annulus missing from the condenser
- coloured Rheinberg rings
- oblique illumination diaphragms producing a DIC-like effect
- a Hoffmann modulation contrast pattern
- phase annuli for objectives made by other manufacturers, for example Carl Zeiss Jena PhV
- any completely custom DIY design

This particular clear glass ring insert was removed from a fluorescence phase contrast condenser - an older version of the Zeiss condenser P/N 46 52 78. Before installing it in your condenser, carefully compare the shape of its housing and the dimensions of the retaining ring.

Interchangeable diaphragm carriers (whether for phase contrast or, for example, darkfield) make it possible to configure a phase contrast condenser exactly as required. This allows the condenser to support precisely the observation techniques and microscope objectives needed.

The clear glass blank presented here is not a component intended for any specific microscope model. Instead, it is used to upgrade or repair a microscope phase contrast condenser. Likewise, it is not dedicated to any specific condenser model. Many Carl Zeiss condenser models have a suitable opening into which this complete insert can be fitted and customised with your own pattern.

The last photograph in the gallery shows the turret disc of a Zeiss phase contrast condenser. An arrow indicates the clear glass ring insert offered here, already installed.

Description of this part for the microscope.

entire specimen when using low-magnification objectives. In Carl Zeiss Standard series microscopes it is mounted in a pivoting holder located within the condenser holder assembly.

This particular holder complete with the wide field lens was removed from a Zeiss Standard GFL microscope, but it also fits condenser holders used, among others, in the following microscopes:
- Zeiss Standard 14
- Zeiss Standard 16
- Zeiss Standard 18
- Zeiss Standard WL / WL 89

The lens can be removed from its holder (as shown in the accompanying video) and used for other DIY projects. The very fact that it is removable (and sometimes even falls out by itself) is the reason why it is missing from many used microscopes. The component offered here is intended to solve exactly this problem.

Description of this part for the microscope.

illuminator attached to the rear of the microscope base). This light source is shared by both transmitted light (DIA) and reflected light (EPI). Inside the microscope base there are two light-directing mirrors operated by control knobs located on the top of the base housing. These controls are marked "EPI" and "MIX". The "EPI" switch moves a mirror into the light path, directing 100% of the light into the reflected-light illumination path (vertically upward through a dedicated lens located inside the microscope base). This is exactly the assembly offered here - the EPI reflected-light angle mirror switch complete with its mirror and movement mechanism.

Information taken from the manufacturer's English-language catalogue "Zetopan Research Microscope. Price List, Effective December 1, 1976":
- This component belongs to the microscope stand. The stand has catalogue number: 9 90 00 01

This component - or individual parts of it - is frequently damaged. Replacing it with the assembly offered here can solve, among others, the following problems:
- if the "EPI" control knob operating the mirror has become bent or broken
- if the light-directing mirror has cracked, chipped, become scratched due to improper cleaning, or its reflective surface has oxidised
- if the movement mechanism, gear, spring or guide pin has been damaged

The last photographs in the gallery clearly indicate, using an arrow, exactly which component is being offered and where it is located inside the microscope. This makes identification straightforward.

The video gallery also contains two videos. One demonstrates how this reflected-light angle mirror operates and moves while installed in the Reichert Zetopan microscope base. The second shows the component after removal, including close-up views from different angles and all of its moving parts.

Description of this part for the microscope.

illuminator connected at the rear of the microscope base). This light source is shared by both the transmitted light (DIA) and the reflected light (EPI). Inside the base there are two light-reflecting mirrors, controlled by knobs located on top of the microscope base housing. These switches are labelled "EPI" and "MIX". The "MIX" switch introduces a semi-transparent plate filter into the optical path; it reflects 50% of the light onto the reflected-light path (vertically upward, through a special lens fitted in the base) and passes the remaining 50% onward for transmitted-light illumination. It is precisely this module - the MIX switch with its beam-splitting plate and the mechanism that moves this filter - that I present here.

Information from the manufacturer's English-language catalogue "Zetopan Research Microscope. Price List, Effective December 1, 1976":
- This is an element from the base of the microscope stand. This stand has the catalogue number: 9 90 00 01

This part - or its individual components - is frequently damaged. Replacing it with the part presented here allows you to solve, among others, the following problems:
- if the "MIX" knob on the base that controls the semi-transparent filter has become bent or has broken off
- if this plate-type light-beam splitter has cracked or chipped, has become scratched through improper cleaning, or its reflective surface has oxidised
- if the movement mechanism has been damaged: the gear, the spring or the pin

In the last photos of the gallery, an arrow indicates exactly which element is meant and where it is located in the microscope. This allows for unambiguous identification of this element.

Additionally, the video gallery contains two films. One shows the operation and the movement mechanics of this beam divider when it is installed in the base of the Reichert Zetopan microscope. The second film shows this part already removed, with close-ups from various angles and the moving components.

Description of this part for the microscope.

inside the microscope base. It includes a mechanism that allows these filters to be inserted into or removed from the light path using control buttons. Since more than one filter can be placed in the light path at the same time, the mechanism also includes an additional (seventh) button that removes all filters from the light path simultaneously. Because of this seventh button, some descriptions incorrectly state that the microscope base contains seven filters.

The following filters are installed in this filter cassette:
- NCB filter (blue conversion filter that transforms yellow incandescent lamp light into naturally white light), Zeiss P/N 46 78 50 (yellow stripe on the push button)
- VG 9 green filter, Zeiss P/N 46 78 05 (green stripe on the push button)
- two neutral density filters 0.5, Zeiss P/N 46 78 40 (light grey stripes on the push button)
- neutral density filter 0.12, Zeiss P/N 46 78 41 (grey stripe on the push button)
- neutral density filter 0.03, Zeiss P/N 46 78 42 (dark grey stripe on the push button)

Combinations of the neutral density filters provide stepwise light transmission values ranging from 1.5% to 100%.

Each of these filters can be removed from its holder, resulting in a standard 32 mm round microscope filter that can also be used in microscopes made by other manufacturers. In addition, any other 32 mm round filter can be installed in this filter cassette, allowing the filter set of the microscope to be configured freely.

This filter cassette with its complete control mechanism fits all versions of Carl Zeiss Photomicroscope microscopes (also known as Zeiss PM or Zeiss Phomi) as well as Zeiss Universal microscopes. However, there are also some less common variants of the Zeiss Universal that do not include this filter mechanism inside the microscope base. Importantly, the Carl Zeiss Ultraphot microscope does not use this component.

The last photographs in the gallery indicate with an arrow exactly which component is being offered and where it is located inside the microscope. This allows unambiguous identification of the part.

Description of this part for the microscope.

applications.

Replaceable diaphragms (both for phase contrast and darkfield) for phase contrast condensers allow the condenser to be configured individually. Thanks to this, it can support exactly the observation techniques and exactly the microscope objectives that are required.

Important: by installing the fluorescence-polarization diaphragm presented here, a condenser currently equipped with standard phase contrast diaphragms can be upgraded with this unique function. A detailed description of the capabilities offered by this technique is provided below.

Basic parameters of this phase contrast diaphragm:
Manufacturer: Carl Zeiss (Oberkochen, West Germany)
Condenser marking: "2". On the Zeiss condenser P/N 46 52 78 this position is marked in blue
For microscope objectives: to obtain phase contrast operation, use microscope objectives marked "Ph2", i.e. objectives with magnifications from 16x to 40x
Substrate material: glass mounted in a metal holder with a flange
Ring material: polarizing film
Outside diameter of the retaining ring: 22 mm
Glass disc diameter: 16 mm
Retaining ring height: 3.5 mm

Important: this component (phase contrast annulus / phase contrast diaphragm) is not intended for a specific microscope model. It is a component for upgrading or repairing a microscope phase contrast condenser. It is not intended for upgrading or repairing any specific condenser model. Many Carl Zeiss condenser models have a matching opening into which this phase contrast annulus can be installed.

In the Carl Zeiss condenser P/N 46 52 78, the phase annuli in positions 2 and 3 are not ordinary openings in an opaque mask but openings in a polarizing film. The polarization direction of these annuli is N-S, so the direct light beam that forms the phase contrast image is linearly polarized. Since it is polarized, its intensity can be adjusted continuously with a second polarizer - without any mechanical parts, diaphragms or shutters.

This second polarizer can be any pair of rotatable polarizing filters. In the original Zeiss design, this is the Carl Zeiss light control unit P/N 47 72 20 with two independently rotatable polarizers mounted beneath the condenser. This makes it possible to switch on phase contrast while simultaneously reducing the illumination intensity to a safe level.

- when the polarizer is aligned parallel to the N-S axis of the annulus - full transmission, maximum phase contrast beam, full-strength phase contrast image;
- when the polarizer is crossed (E-W) - the annulus "goes dark", the objective phase plate no longer receives the direct beam, and the phase contrast image disappears;
- when the polarizer is set to intermediate positions - smooth adjustment of the contribution of the phase contrast image.

When the illumination source is a fluorescence lamp (or, of course, an LED FL light source), simply rotating the polarizer beneath the condenser (together with removing the excitation filter) allows the user to switch from a fluorescence image to a conventional phase contrast image. With the polarizer crossed and the excitation filter installed, the phase annulus is extinguished and only pure fluorescence is visible; as the polarizer is rotated, the phase contrast image gradually increases and is superimposed on the fluorescence image. The second polarizer in unit P/N 47 72 20 is additionally used to attenuate the overall illumination intensity (to protect the specimen or to control the specimen's exposure to fluorescence light).

And now an interesting note from the Ultraphot-shop website https://www.microscopeparts.eu/(http://www.the-ultraphot-shop.org.uk/bicolor.htm), © Spike Walker 2007:

Because the annulus is a linear N-S polarizer, it can be used to produce coloured phase contrast: when a two-colour polarizing filter (Cokin type) is placed between the microscope polarizer and the condenser annulus, the specimen takes on the colour of the illuminating annulus against the background colour of the remaining part of the disc - for example, an orange specimen on a green background when using a red-green filter.

This particular phase contrast annulus was removed from a fluorescence phase contrast condenser - an older version of the Zeiss condenser P/N 46 52 78. Before deciding to install it in your condenser, carefully compare the shape of its housing and the dimensions of the retaining ring.

The last photograph in the gallery shows the turret from a Zeiss phase contrast condenser. The arrow indicates the phase contrast annulus offered here, already installed.

Description of this part for the microscope.

applications.

Replaceable diaphragms (both for phase contrast and darkfield) for phase contrast condensers allow the condenser to be configured individually. Thanks to this, it can support exactly the observation techniques and exactly the microscope objectives that are required.

Important: by installing the fluorescence-polarization diaphragm presented here, a condenser currently equipped with standard phase contrast diaphragms can be upgraded with this unique function. A detailed description of the capabilities offered by this technique is provided below.

Basic parameters of this phase contrast diaphragm:
Manufacturer: Carl Zeiss (Oberkochen, West Germany)
Condenser marking: "3". On the Zeiss condenser P/N 46 52 78 this position is marked in blue
For microscope objectives: to obtain phase contrast operation, use microscope objectives marked "Ph3", i.e. objectives with magnifications from 40x to 100x
Substrate material: glass mounted in a metal holder with a flange
Ring material: polarizing film
Outside diameter of the retaining ring: 28 mm
Retaining ring height: 6 mm

Important: this component (phase contrast annulus / phase contrast diaphragm) is not intended for a specific microscope model. It is a component for upgrading or repairing a microscope phase contrast condenser. It is not intended for upgrading or repairing any specific condenser model. Many Carl Zeiss condenser models have a matching opening into which this phase contrast annulus can be installed.

In the Carl Zeiss condenser P/N 46 52 78, the phase annuli in positions 2 and 3 are not ordinary openings in an opaque mask but openings in a polarizing film. The polarization direction of these annuli is N-S, so the direct light beam that forms the phase contrast image is linearly polarized. Since it is polarized, its intensity can be adjusted continuously with a second polarizer - without any mechanical parts, diaphragms or shutters.

This second polarizer can be any pair of rotatable polarizing filters. In the original Zeiss design, this is the Carl Zeiss light control unit P/N 47 72 20 with two independently rotatable polarizers mounted beneath the condenser. This makes it possible to switch on phase contrast while simultaneously reducing the illumination intensity to a safe level.

- when the polarizer is aligned parallel to the N-S axis of the annulus - full transmission, maximum phase contrast beam, full-strength phase contrast image;
- when the polarizer is crossed (E-W) - the annulus "goes dark", the objective phase plate no longer receives the direct beam, and the phase contrast image disappears;
- when the polarizer is set to intermediate positions - smooth adjustment of the contribution of the phase contrast image.

When the illumination source is a fluorescence lamp (or, of course, an LED FL light source), simply rotating the polarizer beneath the condenser (together with removing the excitation filter) allows the user to switch from a fluorescence image to a conventional phase contrast image. With the polarizer crossed and the excitation filter installed, the phase annulus is extinguished and only pure fluorescence is visible; as the polarizer is rotated, the phase contrast image gradually increases and is superimposed on the fluorescence image. The second polarizer in unit P/N 47 72 20 is additionally used to attenuate the overall illumination intensity (to protect the specimen or to control the specimen's exposure to fluorescence light).

And now an interesting note from the Ultraphot-shop website https://www.microscopeparts.eu/(http://www.the-ultraphot-shop.org.uk/bicolor.htm), © Spike Walker 2007:

Because the annulus is a linear N-S polarizer, it can be used to produce coloured phase contrast: when a two-colour polarizing filter (Cokin type) is placed between the microscope polarizer and the condenser annulus, the specimen takes on the colour of the illuminating annulus against the background colour of the remaining part of the disc - for example, an orange specimen on a green background when using a red-green filter.

This particular phase contrast annulus was removed from a fluorescence phase contrast condenser - an older version of the Zeiss condenser P/N 46 52 78. Before deciding to install it in your condenser, carefully compare the shape of its housing and the dimensions of the retaining ring.

The last photograph in the gallery shows the turret from a Zeiss phase contrast condenser. The arrow indicates the phase contrast annulus offered here, already installed.

Description of this part for the microscope.

connection: 23.2 mm eyepiece tube
Model: US500350A
Maximum resolution: VGA 640x480 px
Image sensor: 0.3 MP

Manufacturer's product page: https://amscope.com/products/md35

Description of this part for the microscope.

0
Microscope connection: 23.2 mm eyepiece tube
Model: TP505100A
Maximum resolution: 2592x1944 px
Image sensor: 5 MP

Manufacturer's product page: https://omaxmicroscope.com/products/a3550s-mk2

Description of this part for the microscope.

type: Barlow lens
Magnification: 2x
Working distance (WD): 30 mm
Thread: 48 mm
Housing: metal

This lens is screwed onto the microscope objective of a stereomicroscope. The SM20 Barlow lens fits any manufacturer's stereomicroscope, provided that the objective has a thread for mounting a 48 mm Barlow lens.

The 2x Barlow lens reduces the working distance but doubles the magnification. It is especially popular among users involved in a wide range of biological applications.

Manufacturer's product page: https://amscope.com/products/sm20

Description of this part for the microscope.

47 20 03 - 9906 (alternative notation: 472003).

Several names are used for this microscope model, including:
- Carl Zeiss Photomicroscope III
- Carl Zeiss Phomi III
- Carl Zeiss PM III
- Zeiss Photomicroscope III RS
- Zeiss Phomi 3
- Zeiss PM3 RS

The photographs in the gallery include an arrow indicating exactly which component is being offered and where it is located inside the microscope. This makes it possible to identify the component unambiguously.

Description of this part for the microscope.

in the microscope base. In the operating manual (available here: https://www.science-info.net/docs/zeiss/Photomicroscope3-Transmitted-Light.pdf) this component is identified as item 27 (figure on page 4, description on page 5).

Several names are used for this microscope model, including:
- Carl Zeiss Photomicroscope III
- Carl Zeiss Phomi III
- Carl Zeiss PM III
- Zeiss Photomicroscope III RS
- Zeiss Phomi 3
- Zeiss PM3 RS

The photographs in the gallery include an arrow indicating exactly which component is being offered and where it is located inside the microscope. This makes it possible to identify the component unambiguously.

Description of this part for the microscope.

be Zeiss catalog number P/N 25 444

Several names are used for this microscope model, including:
- Carl Zeiss Photomicroscope III
- Carl Zeiss Phomi III
- Carl Zeiss PM III
- Zeiss Photomicroscope III RS
- Zeiss Phomi 3
- Zeiss PM3 RS

The photographs in the gallery include an arrow indicating exactly which component is being offered and where it is located inside the microscope. This makes it possible to identify the component unambiguously.

Description of this part for the microscope.

hand side of the microscope base. In the operating manual (available here: https://www.science-info.net/docs/zeiss/Photomicroscope3-Transmitted-Light.pdf) they are identified as items 18 and 30 (figure on page 4).

According to the operating manual, the "!" button "has several functions", while the "A" button is described as "camera shutter ready for photography".

Several names are used for this microscope model, including:
- Carl Zeiss Photomicroscope III
- Carl Zeiss Phomi III
- Carl Zeiss PM III
- Zeiss Photomicroscope III RS
- Zeiss Phomi 3
- Zeiss PM3 RS

The photographs in the gallery include an arrow indicating exactly which component is being offered and where it is located inside the microscope. This makes it possible to identify the component unambiguously.

Description of this part for the microscope.

left-hand side of the microscope base. In the operating manual (available here: https://www.science-info.net/docs/zeiss/Photomicroscope3-Transmitted-Light.pdf) they are identified as items 14 and 15 (figure on page 4).

According to the operating manual, the "B" button opens the camera shutter electrically for as long as it is pressed. Releasing the button closes the shutter.

The "T" button opens the camera shutter and keeps it open. Pressing it again releases the mechanism and closes the shutter.

Several names are used for this microscope model, including:
- Carl Zeiss Photomicroscope III
- Carl Zeiss Phomi III
- Carl Zeiss PM III
- Zeiss Photomicroscope III RS
- Zeiss Phomi 3
- Zeiss PM3 RS

The photographs in the gallery include an arrow indicating exactly which component is being offered and where it is located inside the microscope. This makes it possible to identify the component unambiguously.

Description of this part for the microscope.

manual (available here: https://www.science-info.net/docs/zeiss/Photomicroscope3-Transmitted-Light.pdf) it is identified as item 13 (figure on page 4).

The indicator displays the supply voltage of the microscope illumination. The scale provides readings in the ranges of 0-12 V and 0-6 V.

Several names are used for this microscope model, including:
- Carl Zeiss Photomicroscope III
- Carl Zeiss Phomi III
- Carl Zeiss PM III
- Zeiss Photomicroscope III RS
- Zeiss Phomi 3
- Zeiss PM3 RS

The photographs in the gallery include an arrow indicating exactly which component is being offered and where it is located inside the microscope. This makes it possible to identify the component unambiguously.

Description of this part for the microscope.

In the operating manual (available here: https://www.science-info.net/docs/zeiss/Photomicroscope3-Transmitted-Light.pdf) it is identified as item 16 (figure on page 4).

According to the manufacturer's operating manual, this is a brightness indicator used during photomicrography.

Several names are used for this microscope model, including:
- Carl Zeiss Photomicroscope III
- Carl Zeiss Phomi III
- Carl Zeiss PM III
- Zeiss Photomicroscope III RS
- Zeiss Phomi 3
- Zeiss PM3 RS

The photographs in the gallery include an arrow indicating exactly which component is being offered and where it is located inside the microscope. This makes it possible to identify the component unambiguously.

Description of this part for the microscope.

intended for so-called "thick" objectives
Thread in the cap: no, the cap of this objective case does not contain a thread for attaching an RMS objective

This objective case can be used to store so-called "short" objectives (DIN 33 mm), longer objectives (DIN 37 mm), and long objectives (DIN 45 mm), provided they are not the so-called "thick" type.

Various names are used on the secondary market for a microscope objective case, including:
- objective case
- microscope objective case
- objective container
- microscope objective container
- objective storage case
- objective storage container
- objective box
- objective storage box
- protective objective case
- objective lens case
- objective lens container
- dust protection case
- transport case for microscope objectives
- microscope objective holder case
- storage canister for microscope objectives

Each case has the Meopta logo on its cap.

Although this case is of greatest interest to users and collectors of objectives made by the manufacturer Meopta, it can of course be used to store objectives from any manufacturer.

Description of this part for the microscope.

Carl Zeiss Jena microscope heads with a wide field of view (German: Grossfeld) have one eyepiece tube with diopter adjustment and a second one without it. Here I present the tube without diopter adjustment (straight eyepiece tube).

Basic parameters:
- Type: straight eyepiece tube
- Compatible eyepiece diameter: 30 mm
- Colour: white

Compatible with 30 mm microscope heads used, among others, in the following microscopes:
- Carl Zeiss Jena Jenamed
- Carl Zeiss Jena Jenalab
- Carl Zeiss Jena Jenaval
- Carl Zeiss Jena Jenatech
- Carl Zeiss Jena Jenalumar
- Carl Zeiss Jena Jenavert

Some Carl Zeiss Jena Jenalab and Jenamed microscopes (for example the Jenamed Fluorescence) were factory-equipped with binocular heads accepting 23.2 mm eyepieces. In that case this end cap is **not** compatible with that binocular head. By "that" I specifically mean the binocular head, as this is a component of the head rather than of the microscope itself.

Interestingly, 30 mm wide-field binocular heads are also occasionally fitted to older microscopes from the Mikroval series (for example Ergaval and Amplival). When combined with GF-Planachromat or GF-Planapochromat objectives (the latter also used on the Docuval), this provides arguably the best optical combination available for Carl Zeiss Jena microscopes with a 160 mm tube length.

Description of this part for the microscope.

meters:
Manufacturer: United Scope, owner of the OMAX microscope brand
Condenser type: oil dark field condenser
Numerical aperture N.A.: 1.25 - 1.36
Mounting diameter: 37 mm
Centering screws: yes, two

The standard 37 mm mounting diameter allows this condenser to be used with microscopes from many other manufacturers, for example Lomo Biolam and Olympus CH-2. After increasing the diameter to 39 mm (for example by using a collar printed on a 3D printer), this condenser also fits Zeiss West, PZO, Wild Wetzlar, Hund Wetzlar, Carl Zeiss Jena and many other microscopes.