Zeiss A-Plan Ph2 20x/0.45 RMS Thread Size (Used)

The Zeiss A-Plan Ph2 20x/0.45 is a high-quality **achromatic phase contrast objective** designed for **phase contrast (Ph2), brightfield, and fluorescence microscopy**. With a **numerical aperture (NA) of 0.45**, this objective provides excellent resolution, contrast, and flat-field correction, making it ideal for **live-cell imaging, unstained sample observation, and routine laboratory use**. The **RMS thread size** ensures compatibility with Zeiss and other RMS-compatible microscopes.

Condition

Refurbished/Used
(This product has been inspected and verified to meet manufacturer specifications.)

Included Items

• Zeiss A-Plan Ph2 20x/0.45 Objective

Key Features

• 20x magnification for high-resolution imaging
• Phase Contrast (Ph2) optimized for unstained biological samples
• Plan Achromatic (A-Plan) optics for enhanced contrast and color correction
• Numerical aperture (NA) of 0.45 for improved light transmission
• RMS thread size for compatibility with Zeiss and other standard microscopes
• Flat field correction for sharp, edge-to-edge imaging
• Optimized for fluorescence, phase contrast, and brightfield microscopy with high transmission coatings

Applications

• Phase contrast microscopy (Ph2)
• Fluorescence microscopy
• Brightfield microscopy
• Live-cell imaging
• Pathology and histology
• Biological and clinical research

Specifications

Specification	Details
Magnification	20x
Numerical Aperture (NA)	0.45
Working Distance	~2.0 mm
Immersion Medium	Air (Dry)
Cover Glass Thickness	0.17 mm
Optical Correction	Plan Achromatic (Flat Field, High Contrast, Phase Contrast Optimized)
Thread Size	RMS (0.8" / 20.32mm diameter, 0.706mm pitch)
Parfocal Distance	45 mm
Compatible Microscopes	Zeiss Axioscope, Standard, and other RMS-compatible models
Special Features	Optimized for phase contrast microscopy, high transmission coatings for fluorescence applications