# Part name:
Carl Zeiss Jena KP425 microscope filter 32mm violet fluorescence excitation

# Original page URL:
https://www.microscopeparts.eu/part/carl-zeiss-jena-jenalumar-kp425-microscope-filter-32mm-violet-fluorescence-excitation-99917

# 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 Carl Zeiss Jena KP425 interference filter, 32 mm in diameter, intended for fluorescence microscopy.

Basic parameters of this filter:
Manufacturer: Carl Zeiss Jena
Model: KP425
Type: interference excitation filter for fluorescence
Diameter: 32 mm
Colour: violet
Mirror coating: yes

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
- Carl Zeiss Jena Laboval Fluorescence

Note - because this is an interference filter (it has a mirrored surface), the angle at which the filter sits relative to the incoming light matters and affects its parameters.

The coating on interference filters is sensitive not only to mechanical damage, for example scratches from improper storage or cleaning. Several decades of work right next to the HBO lamp can cloud it or make it delaminate, which shows as patches or rainbow islands that do not disappear when you rotate it. In that case the best solution is to replace the filter with one like the one I offer here.

# Examples of use
- if you know the KP425 specification and this is exactly what you need (for example for a filter turret)
- if your microscope has a Carl Zeiss Jena KP425 interference filter, but it is damaged or in very poor condition
- 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 KP425 Erregerfilter gesprungen
- KP425 interference filter replacement Zeiss Jena
- Fluoval 2 Erregerfilter 32mm Violettanregung
- Jenalumar fluorescence excitation filter 32mm
- Jenamed Fluoreszenz Filterrevolver Filter KP425
- Kurzpassfilter KP 425 Carl Zeiss Jena
- shortpass excitation filter 425nm microscope
- Interferenzfilter Beschichtung eingetrübt HBO
- delaminated interference filter microscope repair
- FIF Formaldehyd induzierte Fluoreszenz Erregerfilter
- DIY fluorescence microscope excitation filter 32mm
- filtr wzbudzający mikroskopowy Carl Zeiss Jena KP425
- interferenční filtr Carl Zeiss Jena KP425
- filtro de excitación fluorescencia Carl Zeiss Jena
- filtro interferencial microscopio Carl Zeiss Jena
- filtro di eccitazione fluorescenza Carl Zeiss Jena
- filtro interferenziale microscopio Carl Zeiss Jena
- Carl Zeiss Jena buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99917.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99917.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99917-carl-zeiss-jena-jenalumar-kp425-microscope-filter-32mm-violet-fluorescence-excitation
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99917.media.md
- Representative photo: https://www.microscopeparts.eu/photo/carl-zeiss-jena-jenalumar-kp425-microscope-filter-32mm-violet-fluorescence-excitation-99917-2
- Representative video: https://www.microscopeparts.eu/play/99917-1
- 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