Zeiss Objective LD Achroplan 40x Corr Ph2 Objective

The Zeiss LD Achroplan 40x/0.60 Ph2 objective represents a cornerstone of biological microscopy, combining the proven achroplan optical design with extended working distance (LD) for enhanced versatility. With a generous 2.5mm working distance—substantially longer than standard 40x objectives—this lens excels when imaging through thick culture vessels, multiwell plates, or specimens mounted in non-standard conditions.

The integrated Ph2 phase contrast ring enables high-contrast visualization of unstained living cells, revealing cellular structures, organelles, and dynamic processes without the phototoxicity or artifacts associated with fluorescent labeling. The precision-engineered correction collar (0-2 range) allows you to compensate for coverglass thickness variations, ensuring optimal resolution and contrast across diverse sample preparation protocols.

This objective features RMS threading for broad compatibility with legacy and modern microscope systems (M27 adapter available upon request). Manufactured in Germany to Zeiss's legendary optical standards, this pre-owned objective has been professionally inspected and certified to have flawless optics, delivering performance indistinguishable from new at a fraction of the cost. Catalog number 440865.