The Zeiss LD A-Plan 20x/0.35 Ph1 is a high-quality **long working distance (LD) achromatic phase contrast objective** designed for **phase contrast (Ph1), brightfield, and fluorescence microscopy**. With a **numerical aperture (NA) of 0.35**, this objective provides superior contrast, resolution, and flat-field correction, making it ideal for **live-cell imaging and unstained sample observation**. The **M27 thread size** ensures compatibility with Zeiss Axio series and other M27-compatible microscopes.
Condition
Refurbished/Used (This product has been inspected and verified to meet manufacturer specifications.)
Included Items
Zeiss LD A-Plan 20x/0.35 Ph1 Objective
Key Features
20x magnification for high-resolution imaging
Long working distance (LD) for improved focus on thick samples
Plan Achromatic (A-Plan) optics for enhanced contrast and color correction
Numerical aperture (NA) of 0.35 for improved light transmission
Phase Contrast (Ph1) optimized for unstained biological samples
M27 thread size for compatibility with Zeiss Axio series 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 (Ph1)
Fluorescence microscopy
Brightfield microscopy
Live-cell imaging
Pathology and histology
Biological and clinical research
Specifications
Specification
Details
Magnification
20x
Numerical Aperture (NA)
0.35
Working Distance
~7.9 mm
Immersion Medium
Air (Dry)
Cover Glass Thickness
0.17 mm
Optical Correction
Plan Achromatic (Flat Field, High Contrast, Phase Contrast Optimized)
Thread Size
M27 (27mm thread diameter)
Parfocal Distance
60 mm
Compatible Microscopes
Zeiss Axio series and other M27-compatible models
Special Features
Long working distance for thick sample imaging, optimized for phase contrast and fluorescence imaging
We offer Up to 1-Year Parts & Labor Warranty (with extended contract offerings), Quality Control & Assurance Documentation and Expert Technology & Application Advice.
