# Part name:
Carl Zeiss Jena Ergaval / Fluoval microscope condenser holder spring-loaded screw | Apl 1,4 mo2 service part

# Original page URL:
https://www.microscopeparts.eu/part/carl-zeiss-jena-ergaval-fluoval-microscope-condenser-holder-spring-loaded-screw-apl-1-4-mo2-service-part-99133

# Part manufacturer:
Carl Zeiss Jena

# Full manufacturer name:
VEB Carl Zeiss Jena DDR (former East Germany)

# Other names of this manufacturer:
- ausJena
- aus Jena
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:
Screws

# Description and specifications:
Original spring mounting screw used to secure the condenser in the condenser holder.

This particular screw comes from the Carl Zeiss Jena Apl 1.4 mo2 condenser holder that was used in the Carl Zeiss Jena Ergaval microscope. The same condenser (but with a different lower lens) is used in an identical holder in Fluoval microscopes. Condenser holders with such screws can also be found in the following microscopes:
- Docuval
- Amplival
- NU-2

The purpose of this spring screw is to push the clamp in which the condenser is mounted outward. Thanks to the spring integrated in the screw, it is possible to center the condenser using long centering screws (you can find such a centering screw in the database under number 99132).

In the last photo, an arrow clearly indicates which screw is meant and where it is mounted in the condenser holder.

# Examples of use
- Sometimes this screw is missing in used microscopes.
- Very often, the tiny screw in this element is broken or missing.
- This element often has dried grease.
- This screw is often damaged because when it wouldn't turn due to dried grease, someone used pliers to turn it.

# Removed from microscope:
Carl Zeiss Jena Ergaval

# Also compatible with the following microscopes:
- Carl Zeiss Jena Ergaval
- Carl Zeiss Jena Amplival
- Carl Zeiss Jena Docuval
- Carl Zeiss Jena Fluoval
- Carl Zeiss Jena Vertival
- Carl Zeiss Jena Epival
- Carl Zeiss Jena Nf
- Carl Zeiss Jena NfPk
- Carl Zeiss Jena NU
- Carl Zeiss Jena NU-2

# Names, descriptions, terms, and search contexts under which this part is searched.
- Carl Zeiss Jena Ergaval microscope repair parts
- Carl Zeiss Jena Ergaval Mikroskop neufetten
- Zeiss Fluoval-2 Schraube
- Zeiss Jena Mikroskop Kondensor Schraube fehlt
- Carl Zeiss Jena Apl 1
- 4 mo2 Reparatur
- Zeiss Jena microscope screw
- Carl Zeiss Jena buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99133.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99133.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99133-carl-zeiss-jena-ergaval-fluoval-microscope-condenser-holder-spring-loaded-screw-apl-1-4-mo2-service-part
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99133.media.md
- Representative photo: https://www.microscopeparts.eu/photo/carl-zeiss-jena-ergaval-fluoval-microscope-condenser-holder-spring-loaded-screw-apl-1-4-mo2-service-part-99133-2
- Other parts from category Screws: https://www.microscopeparts.eu/screws
- More Screws removed from microscope Carl Zeiss Jena Ergaval: https://www.microscopeparts.eu/screws/from/carl-zeiss-jena/ergaval
- More Screws compatible with microscope Carl Zeiss Jena Ergaval: https://www.microscopeparts.eu/screws/for/carl-zeiss-jena/ergaval
- More Screws removed from microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/screws/from/carl-zeiss-jena
- More Screws compatible with microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/screws/for/carl-zeiss-jena

# 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