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.

and other fluorescence microscopes from this company.

Description of this part for the microscope.

dovetail connection in many PZO microscopes and microscope accessories:

- PZO Biolar, MB-30 microscopes, some versions of Studar, ML-5, ML-6, and others
- PZO OE-1 and OE-4 EPI illuminators
- MPI-5 and MPI-3 DIC head
- PZO KS stereo contrast attachment
- magnification changer attachment
- photographic tubes for the PZO MNT6 trino head
- PZO MST-130/131 stereo microscope attachments (adapter for T6)

Users often install this PZO head mount on microscopes from other companies to use the PZO DIC.

Description of this part for the microscope.

Coaxial fine movement mechanism (micro adjustment) with knob
- Block mounting screws to the arm

If you need individual components from this block (e.g. one gear or just knobs) - contact us

Description of this part for the microscope.

consists of:
- an illuminator (light source)
- a "tube" containing collimating lenses and a field diaphragm
- a 90-degree angle mirror
- a light filter (clear or blue)

This offers an integrated block, also known as a "tube." It consists of:
- a metal tube with holes that acts as a heat sink, dissipating heat from the light source
- a set of lenses that collimate the illumination beam
- a field diaphragm (iris diaphragm)
- a knob that opens/closes the diaphragm

This element is the same for all lighting types, regardless of whether it's a 6V 15W bulb, a PZO OH1 (12V 100W) or a modified LED, so it fits any version of the PZO Biolar microscope:
- B
- B2
- GF
- Pol
- DIC
- EPI
- Fluoreszenz

It contains two critical components: a collimating lens that often cracks under temperature, and a field diaphragm whose blades are prone to bending.

If you need smaller - individual components from this block - contact us

Description of this part for the microscope.

without the collimating lenses.

This component is the same for all versions of the PZO Biolar microscope:
- B
- B2
- GF
- Pol
- DIC
- EPI
- Fluoreszenz

If you need smaller, individual diaphragm components (e.g., separate blades) - contact us

Description of this part for the microscope.

microscope:
- B
- Pol
- DIC
- EPI
- Fluoreszenz

Note: it likely will not fit the B2 and GF versions.

This is an original "old-time" element, coming from the dismantling of a PZO Biolar microscope, of very good quality.

Both the right and left side lining are identical.

Description of this part for the microscope.

mechanical lock
- A rack for vertical movement of the condenser holder
- A knob with a gear (pinion) for vertical movement of the condenser
- A mechanical lock to prevent excessive condenser lifting
- A central screw for securing the condenser
- Two long screws for centering the condenser

The condenser supported by the PZO Biolar microscope has a diameter of 39.5 mm.

This component is the same for all versions of the PZO Biolar microscope:
- B
- B2
- GF
- Pol
- DIC
- EPI
- Fluoreszenz

If you need smaller - individual components of this module (e.g. toothed rack, knob, screws - anything) - contact us

Description of this part for the microscope.

PZO logo and a circular illumination filter - the one offered here is colorless.

Some newer versions of the PZO Biolar microscope included a blue illumination filter mounted in the microscope base. This filter cut out the yellow color of the light emitted by the bulb, providing the user with a pleasant, near-white light.

Unfortunately, this filter is not replaceable, and when the light source is changed to a halogen or cold LED, the blue light filter becomes annoying, as the light color changes from white to blue.

If the user tries to remove the original light filter themselves, they often break either the filter or its black housing. This brings us to the point where it's worth having this part on hand - you can easily swap the blue filter for a colorless one.

NOTE - this part is originally heat-attached and held in place by melted plastic legs. After replacement, it's best to glue it in place.

This item fits the following versions of the Biolar PZO microscope:
- B
- Pol
- DIC
- EPI
- Fluoreszenz

Note - it likely will not fit the B2 or GF versions.

Description of this part for the microscope.

Biolar microscope is commonly (incorrectly) called AK11.

The component shown here is used; it's obvious that such an old mirror isn't "like new" - but it is in very good condition.

Description of this part for the microscope.

for storing, using, and quickly replacing entire sets of objectives.

For example, you can have separate turrets already equipped with the following sets of objectives:
- low magnification for observing macro objects with side illumination, without a cover glass (e.g., 2.5x / 3.2x / 5x / 8x / 10x)
- for phase contrast
- for various phase contrasts (positive, anoptral, amplitude, Zernike)
- for DIC
- for water immersion (e.g., Lomo)
- all for oil immersion (e.g., Leitz 10x Oil / 25x Oil / 40x Oil / 100x Oil)
- apochromatic for better color
- for polarization
- only high magnifications, e.g., for analyzing cell wall ornamentation (50x / 63x / 80x / 100x)
- for darkfield work (objectives with an iris diaphragm in the center)

Thanks to this , having only one microscope, we can use it for various purposes and not screw in and unscrew all the lenses manually each time.

Basic parameters:
Model: PZO RO5
Thread: RMS
Number of slots: 5
Mounting method: dovetail
Variant: glossy | mirror-finish

Description of this part for the microscope.

type: flat, horizontal

Suitable for many microscopes from various manufacturers. For example, it fits:
- PZO Biolar microscope
- EPI PZO OE4 illuminator

NOTE - IMPORTANT - This bulb does not fit the PZO MB-30 microscope.

Description of this part for the microscope.

This part is often damaged in PZO SK8 microscope stages: because the knobs extend beyond the microscope's outline after installation, the worm shaft often bends during transport, making it difficult to straighten properly.

The PZO SK8 is a mechanical microscope stage with horizontal knobs, primarily used in PZO MB30 microscopes, ML series models, and PZO MST-130/131 stereo microscopes - but is also sometimes installed in Studar and Biolar models.

Description of this part for the microscope.

the arm is hollow inside. This hollow space is covered by a black sheet metal cover - and this is exactly this part.

This part fits the following PZO Biolar microscope versions:
- B
- B2
- Pol
- DIC
- EPI
- Fluoreszenz

Note - most likely it does not fit the GF version.

It is an original "from the era" part, coming from a disassembled PZO Biolar microscope.

Description of this part for the microscope.

maintenance (especially cleaning) of this element is required. Since PZO Biolar microscopes are 40-50 years old, it is now possible to find units without this cover, as it was lost over the years.

This metal cover also acts as a heat sink and dissipates heat from the bulb - this can sometimes be seen as discoloration on the inner surface of the metal. For this reason, replacing it with an element made of cardboard or plastic is a very bad practice.

Without this cover, contaminants can enter the optical light beam, the angled mirror, or the field diaphragm, which may, for example, cause diaphragm failure or deterioration of image quality.

This element fits the following versions of the PZO Biolar microscope:
- B
- B2
- Pol
- DIC
- EPI
- Fluoreszenz

Note - most likely it does not fit the GF version.

This is an original element, taken from the disassembly of a PZO Biolar microscope.

Description of this part for the microscope.

Monocular microscope head for a fluorescence microscope
Model: PZO MNJ-4
Mounting method: dovetail, diameter 43 mm
Supported eyepieces: 23.2 mm
Mounted filter: OG1 / GG9
For microscopes: PZO Biolar FL and PZO MB-30 FL

Why are monocular microscope heads often used in fluorescence microscopy? Fluorescence microscopy (especially older designs) produces a relatively dark image, so it is beneficial for 100% of the light beam to reach a single eye. A binocular microscope head would split the light 50% to each eye, which could result in an image that is too dark.

The barrier fluorescence filter PZO OG1 / GG9 mounted under the microscope head protects the eyes from the harmful spectrum of fluorescence illumination.

Note - there is also a PZO GG9 fluorescence filter (also available in my catalog). It is important to select the correct filters for the appropriate applications.

The OG1 / GG9 filter is a separate element that can be detached from the microscope head. It is mounted under the microscope head in a dedicated slot provided for this purpose.

Description of this part for the microscope.

for storing, using, and quickly replacing entire sets of objectives.

For example, you can have separate turrets already equipped with the following sets of objectives:
- low magnification for observing macro objects with side illumination, without a cover glass (e.g., 2.5x / 3.2x / 5x / 8x / 10x)
- for phase contrast
- for various phase contrasts (positive, anoptral, amplitude, Zernike)
- for DIC
- for water immersion (e.g., Lomo)
- all for oil immersion (e.g., Leitz 10x Oil / 25x Oil / 40x Oil / 100x Oil)
- apochromatic for better color
- for polarization
- only high magnifications, e.g., for analyzing cell wall ornamentation (50x / 63x / 80x / 100x)
- for darkfield work (objectives with an iris diaphragm in the center)

Thanks to this , having only one microscope, we can use it for various purposes and not screw in and unscrew all the lenses manually each time.

Basic parameters:
Model: PZO RO5
Thread: RMS
Number of slots: 5
Mounting method: dovetail
Variant: matte

Description of this part for the microscope.

ring that allows correction of the vision defect of one eye and proper adjustment of image sharpness. The right eyepiece prism is integrated together with the tube.

Basic parameters:
- Type: tube with diopter correction ring
- Supported eyepiece diameter: 23.2 mm
- Included: right eyepiece prism
- For head model: PZO MND-6, both for models with black and with white housing.

This repair part (service element / replacement part) comes from a binocular head PZO MND-6 which was originally mounted on the microscopes:
- PZO Biolar DIC
- PZO Biolar B

However, because the PZO MND-6 head has a standard mounting interface typical for PZO microscopes (that is a dovetail mount with a diameter of 43 mm), this head can also be found mounted on other PZO microscopes such as:
- Studar
- MB-30

Additional information: the fluorescence microscope PZO Biolar FL was originally sold with a mono head (monocular head) - however the PZO MND6 head also fits this microscope model.

Hinweis - this tube with prism DOES NOT FIT heads that were originally sold with PZO Studar microscopes, even though these heads look very similar. Of course if a head from the Biolar model was mounted on a Studar microscope (because it fits), then this tube will be compatible, because it is a repair element for the HEAD and not for a specific microscope model.

Description of this part for the microscope.

This repair part (service element / replacement part) comes from a binocular head PZO MND-6 which was originally mounted on the microscopes:
- PZO Biolar DIC
- PZO Biolar B

However, because the PZO MND-6 head has a standard mounting interface typical for PZO microscopes (that is a dovetail mount with a diameter of 43 mm), this head can also be found mounted on other PZO microscopes such as:
- Studar
- MB-30

Additional information: the fluorescence microscope PZO Biolar FL was originally sold with a mono head (monocular head) - however the PZO MND6 head also fits this microscope model.

Description of this part for the microscope.

Supported eyepiece diameter: 23.2 mm
- Included: left eyepiece prism
- For head model: PZO MND-6, both for models with black and with white housing.

This repair part (service element / replacement part) comes from a binocular head PZO MND-6 which was originally mounted on the microscopes:
- PZO Biolar DIC
- PZO Biolar B

However, because the PZO MND-6 head has a standard mounting interface typical for PZO microscopes (that is a dovetail mount with a diameter of 43 mm), this head can also be found mounted on other PZO microscopes such as:
- Studar
- MB-30

Additional information: the fluorescence microscope PZO Biolar FL was originally sold with a mono head (monocular head) - however the PZO MND6 head also fits this microscope model.

Hinweis - this tube with prism DOES NOT FIT heads that were originally sold with PZO Studar microscopes, even though these heads look very similar. Of course if a head from the Biolar model was mounted on a Studar microscope (because it fits), then this tube will be compatible, because it is a repair element for the HEAD and not for a specific microscope model.

Description of this part for the microscope.

microscopes:
- PZO Biolar DIC
- PZO Biolar B

However, because the PZO MND-6 head has a standard mounting interface typical for PZO microscopes (that is a dovetail mount with a diameter of 43 mm), this head can also be found mounted on other PZO microscopes such as:
- Studar
- MB-30

This part may be the answer to the following problems:
- scratched PZO head housing
- how to paint a PZO head?
- how to replace a PZO head cover?
- dropped Biolar head
- dented Biolar PZO head housing

Description of this part for the microscope.

microscope from any manufacturer that allows the use of eyepieces with a mounting diameter of 23.2 mm.

Description of this part for the microscope.

10x
Correction: Achromat
Numerical aperture: 0.24
Tube length: 160 mm
Focal length: 45 mm
Cover glass: no
Immersion: no
Thread: RMS
Info: PI = polarization-interference objective (red ring).

Compatible with the following PZO condensers:
- PZO KPI 2
- slit condenser
PI objectives are among the components of the PZO UPI set (i.e. the so-called DIC).

VERY IMPORTANT: the marking on the objective is "PI" (in lowercase: "pi"), meaning [P]-polarization [I]-interference.
In many descriptions available on the Internet, you can find information that this is a PLAN objective. This is an ERROR caused by misinterpreting the marking as PL.

Note: another INCORRECT piece of information often found online is that these are DIC objectives. This is not true.
DIC according to Pluta (niem: DIC nach Pluta), sold by PZO, achieves the DIC effect (i.e. a 3D relief image) using standard achromatic PZO objectives (and not only those). Objectives marked PI with a red ring are not required for this.

It can be used with any microscope from any manufacturer that supports RMS objectives, TL=160 mm, FL=45 mm.

Description of this part for the microscope.

eyepieces can be used with microscopes from any manufacturer, as long as the microscope supports eyepieces with a mounting diameter of 23.2 mm.

Description of this part for the microscope.

microscopes from any manufacturer, as long as the microscope supports eyepieces with a mounting diameter of 23.2 mm.

Description of this part for the microscope.

PZO Biolar P (Pol)
- PZO Biolar FL (Fluorescence)

The function of this component is to reflect light coming from the microscope base vertically upward so that, after passing through the specimen slide and the objective, it reaches the eyepieces and ultimately the user's eyes.

This cast component bears the marking "AK11", and this designation is commonly used on the secondary market to identify this particular angle mirror. However, it is not a part number, because the marking "AK11" can also be found on other PZO microscope components, which may lead to confusion. It is very likely that the source of this confusion is the attempt to compare PZO metal components with those used in Carl Zeiss Jena microscopes, where cast parts are marked with numbers in the format "Si10 CZ xxxxx". This may incorrectly lead people to assume that PZO used a similar numbering system.

Replacement of the angle mirror in PZO Biolar microscopes may be necessary in the following situations:
- if the mirror has become heavily scratched due to improper cleaning (minor scratches are usually not visible during normal use)
- if the silver reflective coating of the installed mirror becomes oxidized
- if the mirror becomes damaged, chipped, or cracked, for example after coming loose from its mounting

Description of this part for the microscope.

and serve two main purposes:
- they allow the user to comfortably rest their head against the eyepieces, reducing neck strain during prolonged microscope work (this is not possible with soft rubber eyecups)
- they block stray light entering from the sides, reducing reflections and improving image contrast

This offer includes 2 (two) pieces, i.e. one pair.

A few quick facts:
- these eyecups fit PZO eyepieces only
- these eyecups fit only PZO eyepieces with a mounting diameter of 23.2 mm
- these eyecups DO NOT FIT older PZO eyepieces with a knurled outer edge - an example of such eyepieces can be seen in the last gallery photograph
- the last gallery photograph shows an example of these eyecups installed on microscope eyepieces

Important: no dimensions are provided here. These eyecups fit only 23.2 mm microscope eyepieces manufactured by PZO (PZO Poland / PZO Warszawa). They do not fit microscope eyepieces made by other manufacturers. If a microscope made by another manufacturer (e.g. Lomo Biolam) uses PZO eyepieces, these eyecups will fit. If a PZO microscope (e.g. PZO Biolar) uses eyepieces made by another manufacturer (e.g. Carl Zeiss Jena), these eyecups will not fit even though the microscope itself is made by PZO. These eyecups fit the eyepieces - not a specific microscope.

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.

these guides:
Number of guides in the set: 2
Material: the guides are made of aluminium
Number of bearing balls: 13 per guide
Length of the guide: 114 mm
Width of the guide: 6 mm
Removed from: the mechanical stage PZO SK14
Which microscope this stage worked with: the PZO Biolar microscope

Important: these are longitudinal guides. They are responsible for moving the stage surface back and forth. They are not transverse guides for moving the specimen holder sideways - because the PZO SK14 stage, unlike many other stages, has NO transverse guides.

Please note: SK14 is a stage model made by the PZO company (SK = Stolik Krzyżowy, that is mechanical stage). The marking of this model (the marking "SK14") is on the stage. This stage was most often mounted on PZO Biolar microscopes, which carry no model name. As a result "SK14" is the only marking found on the microscope, and many people use the name "PZO SK14" - wrongly - for the whole microscope. This is a mistake: PZO SK14 is a stage model, not a microscope model.

The SK14 microscope stage these guides come from was mounted in a PZO Biolar B microscope. However, the same stage model was also used in other models of the Biolar microscope and in other microscopes made by this manufacturer, for example:
- PZO Biolar DIC
- PZO Biolar B2
- PZO Biolar GF
- PZO MB 30
- PZO Studar

This item is not a spare part for repairing a microscope. It is a component of the microscope stage - and the stage can be used with any compatible PZO microscope.

Detailed photos of these guides are available in the gallery. Every photo shows a scale with a millimetre division. The last photo shows the whole PZO SK14 microscope stage, with an arrow pointing at the component in question and at where it sits in the stage, so that this part can be identified without any doubt.

Description of this part for the microscope.

the longer of the two in the stage - that works together with the larger pinion of the stage manipulator and is responsible for moving the specimen sideways.

Basic data of this rack:
Length of the rack: 91 mm
Number of teeth: 62
Material: brass
How it is fixed: with 2 screws, which are included
Removed from: the mechanical stage PZO SK14
Which microscope this stage worked with: the PZO Biolar microscope

Important: there are two racks of different length in the PZO SK14 microscope stage. The one I am offering here is the longer one, responsible for the transverse movement, that is for moving the specimen sideways. This is not the shorter rack responsible for moving the stage surface back and forth.

Please note: SK14 is a stage model made by the PZO company (SK = Stolik Krzyżowy, that is mechanical stage). The marking of this model (the marking "SK14") is on the stage. This stage was most often mounted on PZO Biolar microscopes, which carry no model name. As a result "SK14" is the only marking found on the microscope, and many people use the name "PZO SK14" - wrongly - for the whole microscope. This is a mistake: PZO SK14 is a stage model, not a microscope model.

The SK14 microscope stage this rack comes from was mounted in a PZO Biolar B microscope. However, the same stage model was also used in other models of the Biolar microscope and in other microscopes made by this manufacturer, for example:
- PZO Biolar DIC
- PZO Biolar B2
- PZO Biolar GF
- PZO MB 30
- PZO Studar

A practical note on fitting: this mechanism needs a very tacky grease. If you need some, I will add it to the parcel - just write to me.

This item is not a spare part for repairing a microscope. It is a component of the microscope stage - and the stage can be used with any compatible PZO microscope.

Detailed photos of this rack are available in the gallery. Every photo shows a scale with a millimetre division. The last photo shows the whole PZO SK14 microscope stage, with an arrow pointing at the component in question and at where it sits in the stage, so that this part can be identified without any doubt.