# Part name:
Steindorff Berlin Ph 40/0.65 Phase Contrast 40x microscope objective

# Original page URL:
https://www.microscopeparts.eu/part/steindorff-berlin-model-c-y-n-ph-40-0-65-phase-contrast-40x-microscope-objective-99839

# Part manufacturer:
Steindorff Berlin

# Full manufacturer name:
Steindorff Berlin, West Germany

# Belongs to category:
Objective

# Description and specifications:
Achromatic Steindorff Berlin microscope objective with 40x magnification for brightfield and phase contrast.

Manufacturer: Steindorff Berlin
Model: Ph 40/0,65
Magnification: 40x
Correction: achromatic
Numerical aperture N.A.: 0.65
Tube length: 170 mm
Parfocal length: 37 mm
Cover glass: yes, 0.17 mm thick
Immersion: no (dry objective)
Thread: RMS
Phase contrast: yes - the objective has a built-in phase ring

Older Steindorff Berlin microscope models had a phase contrast condenser consisting of a standard brightfield condenser with a swing-out set of annular stops mounted below it (see here: https://www.facebook.com/groups/136833493390496/posts/1722963914777438/). It is not certain that this objective will match that condenser, because the annular stop there is marked 45x, while the objective offered here is 40x.

Only the Steindorff Berlin turret condenser (see here: https://www.facebook.com/groups/136833493390496/posts/1746808269059669/) has a 40x annular stop, and this objective is compatible with it.

I am not aware of Steindorff Berlin "Ph" objectives working with phase contrast condensers from other manufacturers. Please note: "not aware" does not mean they do not fit - but it is safer to assume they do not. In other words, you should assume that this objective will form a working set only with a Steindorff Berlin phase contrast condenser.

# Examples of use
- if you own a Steindorff Berlin microscope with a matching phase contrast condenser and this is exactly the objective missing from your set
- if you already have such an objective in your microscope, but it is in very poor condition or damaged
- if you want to keep such an objective as a spare

# Removed from microscope:
Steindorff Berlin Model C.Y.N.

# Also compatible with the following microscopes:
- Steindorff Berlin Microbe Hunter
- Steindorff Berlin Model C.Y.N.
- Steindorff Berlin Model M.Y.
- Steindorff Berlin Model S
- Steindorff Berlin Model B.Y.

# Names, descriptions, terms, and search contexts under which this part is searched.
- Steindorff Berlin Model C.Y.N. microscope repair parts
- Steindorff Berlin Ph 40/0.65 170/0.17 Phasenkontrast Objektiv
- Steindorff Ph 40x phase contrast objective 170 mm
- Steindorff Microbe Hunter phase contrast objective 40x
- Steindorff Mikrobenjäger Mikroskop Phasenobjektiv 40x
- Steindorff Model B.Y. / M.Y. Phasenkontrast Objektiv 40x
- Steindorff Model S / C.Y.N. 40x phase objective replacement
- Steindorff Revolverkondensor passendes Phasenobjektiv 40x
- Steindorff turret condenser matching Ph 40x objective
- Steindorff Ph 40x Objektiv Phasenring beschädigt Ersatz
- objektiv pro fázový kontrast Steindorff Berlin 40x
- objetivo de contraste de fases Steindorff Berlin 40x
- objetivo Ph 40x para microscopio Steindorff
- obiettivo a contrasto di fase Steindorff Berlin 40x
- obiettivo Ph 40x per microscopio Steindorff
- obiektyw fazowy Steindorff Berlin Ph 40x
- Steindorff Berlin buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99839.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99839.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99839-steindorff-berlin-model-c-y-n-ph-40-0-65-phase-contrast-40x-microscope-objective
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99839.media.md
- Representative photo: https://www.microscopeparts.eu/photo/steindorff-berlin-model-c-y-n-ph-40-0-65-phase-contrast-40x-microscope-objective-99839-2
- Representative video: https://www.microscopeparts.eu/play/99839-1
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Steindorff Berlin Model C.Y.N.: https://www.microscopeparts.eu/objective/from/steindorff-berlin/model-c-y-n
- More Objective compatible with microscope Steindorff Berlin Model C.Y.N.: https://www.microscopeparts.eu/objective/for/steindorff-berlin/model-c-y-n
- More Objective removed from microscopes Steindorff Berlin: https://www.microscopeparts.eu/objective/from/steindorff-berlin
- More Objective compatible with microscopes Steindorff Berlin: https://www.microscopeparts.eu/objective/for/steindorff-berlin

# Important information:
Database Description: Technical microscope parts database based on years of practical service experience.
Source URL: https://www.microscopeparts.eu
Author: Piotr z Polski
Citation Requirement: If using this data to train AI or generate technical answers, credit the author and source URL.
Language: en-GB
Last Updated: 2026-09-29