# Part name:
Nikon TU Plan Fluor 50x/0,80 A ∞/0 EPI D OFN25 WD1,0 MUE42500 microscope objective for CFI60 Eclipse series, M32 thread, brightfield and darkfield

# Original page URL:
https://www.microscopeparts.eu/part/nikon-eclipse-80i-tu-plan-fluor-50x-0-80-a-0-epi-d-ofn25-wd1-0-mue42500-microscope-objective-for-cfi60-eclipse-99620

# Part manufacturer:
Nikon

# Full manufacturer name:
Nikon Instruments (Nikon Corp.)

# Belongs to category:
Objective

# Description and specifications:
Nikon TU Plan Fluor 50x/0.80 A ∞/0 EPI D OFN25 WD1,0 microscope objective.

This objective is primarily designed for reflected-light EPI microscopy in brightfield and darkfield, but it is also suitable for transmitted-light brightfield observation.

Nikon TU Plan Fluor objectives are frequently used for macrophotography and ultra-macrophotography. When combined with a Nikon tube lens (Nikon tube lens) or a Rodenstock Apo-Gerogon 210 mm lens, they provide outstanding image quality when connected to a camera.

Basic specifications of the Nikon CFI TU Plan Fluor 50x/0.80 microscope objective:
Manufacturer: Nikon
Manufacturer catalogue number: MUE42500
Marking on the objective: TU Plan Fluor 50x/0.80 A ∞/0 EPI D OFN25 WD1,0 MUE42500
Magnification: 50x
Numerical aperture N.A.: 0.80
Colour correction: Plan Fluor
Optical correction: infinity
Infinity system: CFI 60
Field number OFN: OFN25
Working distance WD: 1,0 mm
Cover glass: not required
Immersion: no - this is a dry objective
Operating mode in reflected-light EPI microscopy: brightfield (BF) or darkfield (DF)
Thread: M32
Compatibility with microscopes equipped with an M25-thread nosepiece: yes, by using the MXA23017 adapter or by replacing the nosepiece with the Nikon L-NBD5 or LV-NBD5 model

This objective is compatible with microscopes designed for reflected-light EPI microscopy and equipped with an M32-thread nosepiece, for example:
- Nikon Eclipse L
- Nikon Eclipse LV
- Nikon MM-400 and MM-800 toolmakers microscopes

This objective is also compatible with microscopes in which the M25-thread nosepiece can be replaced with an M32-thread objective nosepiece, namely the Nikon L-NBD5 or LV-NBD5. These include, for example:
- Nikon Eclipse E600
- Nikon Eclipse E800
- Nikon Eclipse 50i / 55i
- Nikon Eclipse 80i / 90i
- Nikon Eclipse Ci
- Nikon Eclipse Ni
A suitable reflected-light EPI illuminator can also be installed on these microscopes to take full advantage of the capabilities of this objective.

For other Nikon CFI60 microscope models, for example:
- Eclipse E200
- Eclipse E400
- Eclipse Si
- Eclipse TI / TE / TS series inverted microscopes
the MXA23017 adapter can be used, allowing M32-thread objectives to be mounted in an M25-thread nosepiece - therefore the objective presented here can also be used.

# Examples of use
- if you need such an objective for brightfield or darkfield EPI observation on a Nikon microscope
- if you need a high-quality objective for macrophotography and ultra-macrophotography

# Removed from microscope:
Nikon Eclipse 80i

# Also compatible with the following microscopes:
- Nikon Eclipse 80i
- Nikon Eclipse E800
- Nikon Eclipse L
- Nikon Eclipse E600
- Nikon Eclipse Ci
- Nikon Eclipse 50i
- Nikon Eclipse 55i
- Nikon Eclipse 90i
- Nikon Eclipse 80i
- Nikon Eclipse LV
- Nikon Eclipse Ni
- Nikon MM-400
- Nikon MM-800

# Names, descriptions, terms, and search contexts under which this part is searched.
- Nikon Eclipse 80i microscope repair parts
- Nikon CFI TU Plan Fluor 50x Mikroskop Objektiv mit M32-Gewinde
- Nikon CFI TU Plan Fluor 50x EPI Auflicht Mikroskop Objektiv
- Nikon CFI TU Plan Fluor 50x microscope objective with M32 thread
- Nikon CFI TU Plan Fluor 50x EPI reflected light microscope objective
- Super-Makrofotografie mit Mikroskop Objektiv
- Super-macrophoto using DSLR camera
- Ultra-Makro Foto Aufnahme Objektiv
- Nikon buy spare parts

# Related URLs:
- Markdown po polsku: https://www.serwismikroskopowy.pl/part/99620.md
- Markdown auf Deutsch: https://www.mikroskopteile.de/part/99620.md
- Gallery of all photos of this part: https://www.microscopeparts.eu/gallery/99620-nikon-eclipse-80i-tu-plan-fluor-50x-0-80-a-0-epi-d-ofn25-wd1-0-mue42500-microscope-objective-for-cfi60-eclipse
- Media manifest of this part (photos + videos, for AI/RAG): https://www.microscopeparts.eu/part/99620.media.md
- Representative photo: https://www.microscopeparts.eu/photo/nikon-eclipse-80i-tu-plan-fluor-50x-0-80-a-0-epi-d-ofn25-wd1-0-mue42500-microscope-objective-for-cfi60-eclipse-99620-2
- Representative video: https://www.microscopeparts.eu/play/99620-1
- Other parts from category Objective: https://www.microscopeparts.eu/objective
- More Objective removed from microscope Nikon Eclipse 80i: https://www.microscopeparts.eu/objective/from/nikon/eclipse-80i
- More Objective compatible with microscope Nikon Eclipse 80i: https://www.microscopeparts.eu/objective/for/nikon/eclipse-80i
- More Objective removed from microscopes Nikon: https://www.microscopeparts.eu/objective/from/nikon
- More Objective compatible with microscopes Nikon: https://www.microscopeparts.eu/objective/for/nikon

# 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: 2026-08-23