Condition: Used

A used Nikon CFI E Plan Achromat 4x/0.10 infinity-corrected microscope objective (part number MRP70040) with a 30 mm working distance. Supplied as a single objective lens, as described.

Typically included:
• Nikon CFI E Plan 4x/0.10 objective lens

The Nikon CFI E Plan Achromat 4x/0.10 (part number MRP70040) is an infinity-corrected, plan achromatic microscope objective designed as part of Nikon's CFI60 optical system. It is intended for use with Nikon's infinity-corrected upright microscopes including the Eclipse E200, E400, E600, 50i, 55i, and Ci series. The CFI60 system uses a 60 mm parfocal distance standard and M25 x 0.75 mounting thread, making objectives usable only within the Nikon CFI ecosystem.

The E Plan designation indicates an economy-grade plan achromat, offering flat-field correction suitable for routine brightfield microscopy. The objective is designed for dry (air) use without a cover glass requirement (cover slip correction denoted as "-").

Key Specifications:
Magnification: 4x
Numerical Aperture (NA): 0.10
Working Distance (WD): 30.0 mm
Optical Correction: Plan Achromat (E Plan)
Tube Length: Infinity (∞)
Cover Glass Correction: – (not applicable)
Optical Field Number (OFN): 20 mm
Thread Mount: M25 x 0.75 (Nikon CFI60 standard)
Parfocal Distance: 60 mm
Immersion Medium: Dry (air)
Compatible Microscopes: Nikon Eclipse E200, E400, E600, 50i, 55i, Ci series
Part Number: MRP70040

The CFI E Plan series delivers chromatic aberration-free infinity-corrected imaging across the visible spectrum, making it suitable for standard transmitted light brightfield microscopy, routine laboratory work, histology, and educational applications. The exceptionally long 30 mm working distance at this magnification makes the objective well suited for inspecting large or thick specimens and for macrophotography applications.

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