# Part name:
Carl Zeiss Jena B226g microscope filter 32mm fluorescence blue

# Original page URL:
https://www.microscopeparts.eu/part/carl-zeiss-jena-jenalumar-b226g-microscope-filter-32mm-fluorescence-blue-99914

# 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:
Filters

# Description and specifications:
Professional blue glass filter Carl Zeiss Jena B226g, 32 mm in diameter, intended for fluorescence microscopy.

Basic parameters of this filter:
Manufacturer: Carl Zeiss Jena
Model: B226g
Filter type: red-absorbing glass filter (the manufacturer calls it Rotsperrfilter)
Diameter: 32 mm
Colour: blue
Toughened version: yes

The letter "g" at the end of the designation is short for the German gehärtet, meaning toughened - the manufacturer gave it to filters meant to work right next to high-power lamps, especially HBO mercury burners, where ordinary glass does not withstand the high temperature.

Filters 32 mm in diameter can be used in most microscopes from many manufacturers. In Carl Zeiss Jena microscopes they can be used, among others, in the following fluorescence microscopes:
- Carl Zeiss Jena Jenamed Fluorescence (Fluoreszenz)
- Carl Zeiss Jena Jenalumar
- Carl Zeiss Jena Fluoval / Fluoval-2
- Carl Zeiss Jena Laboval Fluorescence

In the excitation path this filter does not work on its own. It is added to the main filter to cut off the red passed by that filter and to narrow the excitation band further.

# Examples of use
- if you know the B226g specification and this is exactly what you need (for example as an addition to the KP490 or U204 filter)
- if your microscope has a Carl Zeiss Jena B226g filter, but it is cracked, scratched or in very poor condition
- if you already have B228 or B229 and want to complete the set with the thinnest one, so you can match the degree of red absorption to the specimen
- if you want to use this filter in your own DIY project or in a microscope from another manufacturer (for example Leica, Nikon, Leitz Wetzlar or Zeiss West Germany)

# Removed from microscope:
Carl Zeiss Jena Jenalumar

# Also compatible with the following microscopes:
- Carl Zeiss Jena Jenamed
- Carl Zeiss Jena Jenalumar
- Carl Zeiss Jena Laboval Fluorescence
- Carl Zeiss Jena Fluoval-2
- Carl Zeiss Jena Fluoval

# Names, descriptions, terms, and search contexts under which this part is searched.
- Carl Zeiss Jena Jenalumar microscope repair parts
- Carl Zeiss Jena B226g Blaufilter gesprungen
- B226 BG 23 Farbglas Zeiss Jena Ersatz
- Rotsperrfilter 32mm Zeiss Jena Fluoreszenz
- scratched blue glass filter microscope replacement
- Jenalumar Blaufilter 32mm Erregerfilter Zusatz
- Jenamed Fluoreszenz Filterrevolver Blaufilter B226
- BG 23 Farbglasfilter 1mm Carl Zeiss Jena
- B226 B228 B229 Zeiss Jena Blaufilter Satz
- KP490 Zusatzfilter Blauanregung Zeiss Jena
- U204 UV-Anregung Zusatzfilter Zeiss Jena
- DIY fluorescence microscope red cut filter 32mm
- filtr pochłaniający czerwień mikroskopowy Carl Zeiss Jena B226g
- modrý filtr Carl Zeiss Jena B226g
- filtro azul de absorción de rojo Carl Zeiss Jena
- filtro para microscopio fluorescencia Carl Zeiss Jena
- filtro blu assorbimento rosso Carl Zeiss Jena
- filtro per microscopio fluorescenza Carl Zeiss Jena
- Carl Zeiss Jena buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99914.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99914.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99914-carl-zeiss-jena-jenalumar-b226g-microscope-filter-32mm-fluorescence-blue
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99914.media.md
- Representative photo: https://www.microscopeparts.eu/photo/carl-zeiss-jena-jenalumar-b226g-microscope-filter-32mm-fluorescence-blue-99914-2
- Representative video: https://www.microscopeparts.eu/play/99914-1
- Other parts from category Filters: https://www.microscopeparts.eu/filters
- More Filters removed from microscope Carl Zeiss Jena Jenalumar: https://www.microscopeparts.eu/filters/from/carl-zeiss-jena/jenalumar
- More Filters compatible with microscope Carl Zeiss Jena Jenalumar: https://www.microscopeparts.eu/filters/for/carl-zeiss-jena/jenalumar
- More Filters removed from microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/filters/from/carl-zeiss-jena
- More Filters compatible with microscopes Carl Zeiss Jena: https://www.microscopeparts.eu/filters/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: 2026-10-19