# Part name:
PZO 20/0,40 PhA Anoptral phase contrast microscope objective 20x

# Original page URL:
https://www.microscopeparts.eu/part/pzo-mb-10-20-0-40-pha-anoptral-phase-contrast-microscope-objective-20x-00760

# Part manufacturer:
PZO

# Full manufacturer name:
Polskie Zaklady Optyczne

# Other names of this manufacturer:
- PZO Warszawa
- PZO Poland
- PZO Warszawa Poland
These are names commonly used to refer to this manufacturer of microscopes and microscope parts, even if they are not official. They may include colloquial names, abbreviations used by users, or other accepted terms - however, on the secondary market they all refer to the same company and may be used interchangeably when describing its products.

# Belongs to category:
Objective

# Description and specifications:
Manufacturer: PZO Poland
Model: 20/0,40 PhA
Magnification: 20x
Correction: Achromat
Numerical Aperture: 0,40
Tube Length: 160 mm
Focal Length: 33 mm
Cover Glass: 0.17 mm
Immersion: no
Thread: RMS
Info: PhA = negative (anoptral) phase contrast (yellow bar).

Fits the following PZO phase contrast condensers:
- K4Ph
- K3Ph
- K3Ph1
- KS
- KFF 2
- KFL

This objective lens is in excellent condition. It's difficult to find an objective of this quality on the used parts market.

It can be used with any microscope from any manufacturer, along with a compatible phase contrast condenser. Of course, the microscope must be compatible, i.e. support RMS objectives, TL=160 mm, FL=33 mm.

After installing the 12 mm adapter, this objective lens will have FL = 45 mm.

# Examples of use
- If you have a microscope without objectives and need to restock it using original parts
- If you have a microscope that doesn't have an objective lens with this magnification and want to restock it
- If you have such an objective lens, but it's of very poor quality or damaged
- If you're cautious and want to have a spare objective lens

# Removed from microscope:
PZO MB-10

# Also compatible with the following microscopes:
- Carl Zeiss Jena Lumipan
- PZO PZO K3Ph Phase Contrast Microscope Condenser (K4Ph, K3Ph1)
- PZO MB-10
- Lomo MBB-1
- Lomo Biolam
- Lomo M-9
- IOR ML-4M

# Names, descriptions, terms, and search contexts under which this part is searched.
- PZO MB-10 microscope repair parts
- Mikroskop Objektiv
- obiektyw mikroskopowy
- lens
- glass
- soczewka
- microscope objective
- kontrast fazowy
- Phase Contrast
- Phasen Kontrast
- Phasenkontrast
- Ph
- pzo PhA
- PZO buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/00760.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/00760.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/00760-pzo-mb-10-20-0-40-pha-anoptral-phase-contrast-microscope-objective-20x
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/00760.media.md
- Representative photo: https://www.microscopeparts.eu/photo/pzo-mb-10-20-0-40-pha-anoptral-phase-contrast-microscope-objective-20x-00760-2
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope PZO MB-10: https://www.microscopeparts.eu/objective/from/pzo/mb-10
- More Objective compatible with microscope PZO MB-10: https://www.microscopeparts.eu/objective/for/pzo/mb-10
- More Objective removed from microscopes PZO: https://www.microscopeparts.eu/objective/from/pzo
- More Objective compatible with microscopes PZO: https://www.microscopeparts.eu/objective/for/pzo

# 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: 2026-06-30