Zeiss LD Achroplan 40x/0.60 Ph2 Objective with Correction Collar 🔬 Extended working distance for thick specimens and culture vessels 🎯 Phase contrast Ph2 optics for label-free live cell imaging 🔧 Adjustable correction collar (0-2) compensates for coverglass variations ✨ Excellent condition with flawless optics - significant savings vs. new 🔧 Product Description 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. 🔎 Typical Applications Live cell imaging in tissue culture flasks and multiwell plates Cell biology research requiring extended working distance Phase contrast microscopy of unstained biological specimens Time-lapse imaging of cell division and migration Quality control in pharmaceutical and biotechnology labs Educational microscopy in university teaching laboratories Clinical pathology and hematology applications 📊 Key Specifications Specification Details Magnification 40x Numerical Aperture (NA) 0.60 Working Distance 2.5 mm (extended) Optical Design LD Achroplan (long distance achromatic plan) Contrast Method Phase contrast Ph2 Correction Collar 0-2 range for coverglass compensation Thread Type RMS (M27 adapter available upon request) Manufacturer Carl Zeiss (Germany) Catalog Number 440865 SKU 440865 Condition Excellent - flawless optics, professionally inspected Original List Price $2,195 University purchase orders accepted. Contact us for technical specifications, compatibility verification, or institutional pricing. Thank you for viewing, and please feel free to call or email with any questions.
