Leica CM1950 Cryostat Microtome 120V with Knife Holder and Vacuum Assist

You Will Receive: - Leica CM1950 Cryostat Microtome 120V (047742467) with Vacuum Assist and UVC Disinfection - Knife Holder Assembly with Anti-Roll Plate - Vacuum Assist Tool - Heat Extractor - Specimen Disc - Power Cable with NEMA 5-20 Plug - 90-Day Warranty Fully Tested and Working Without Issue: After its initial disinfection and inspection, our technicians tested the Leica CM1950 cryostat microtome with the following results: - Ran component test: PASSED - Ran service final check: PASSED - Chamber cooling reaches -33°C: PASSED* - Object head cooling reaches -50°C: PASSED - Check window heater: PASSED - Check chamber light: PASSED - Check defrost: PASSED - Check UVC disinfection system: PASSED - Check vacuum assist: PASSED - Check e-stop: PASSED - Check motorized sectioning drive: PASSED *Notice: The chamber did not reach the -35°C low temperature specification due to the ambient temperature being warmer than 20°C at the time of testing. Notable Service Performed: - Cleaned undercarriage. - Cleaned refrigeration condenser. - Cleaned chamber, microtome, and knife assembly. - Lubricated microtome and knife assembly. Notice: This cryostat has some minor cosmetic blemishes. Please review the available photos to see the physical condition before purchasing. Specifications: Manufacturer Leica Model CM1950-11-1-1-1-1 Ref. No. 047742467 Serial No. 4251 Mfg. date 07.2014 Power rating 120V~, 60Hz Power consumption 1900VA Overall size of device, without handwheel (W x D x H) 27.6 x 33.5 x 47.8 in (70 x 85 x 121.5 cm) Overall size of device, with handwheel (W x D x H) 32.9 x 33.5 x 47.8 in (83.5 x 85 x 121.5 cm) Working height (armrest) 40.4 in (102.5 cm) Empty weight (without accessories) 320-425.5 lb (145-193 kg) depending on configuration Microtome Type Rotary microtome, encapsulated Section thickness range 1 to 100 um Trimming range Clinic: 10 - 40 um Research: 1 - 600 um Total specimen feed 25 mm + 1 mm Vertical stroke 59 mm +/- 0.5 mm Specimen retraction 20um (can be deactivated) Maximum specimen size 50 x 80 mm Cutting speed Slow: 0-50 strokes/min Fast: 0-85 strokes/min Vmax: 85-90 strokes/min Specimen orientation 8° (x, y-axis) Electric coarse feed Slow: 300 um/s Fast: 900 um/s UVC Lamp Manual start Yes Automatic start No Manual abort Yes Duration cycle Short cycle: 30 min Long cycle: 180 min Environmental Specification Operating altitude Max. 2000 m above sea level Operating temperature +18°C to +35°C Relative humidity (operation) 20 to 60% RH non-condensing Transport temperature -29°C to +50°C Storage temperature +5°C to +50°C Relative humidity (transport / storage) 10 to 85% RH non-condensing Minimum distance to walls Back: 150 mm Right: 300 mm Left: 150 mm Refrigeration System Cryochamber Temperature range 0°C to -35°C +/-5 K, adjustable in 1 K increments at ambient temperature of 20°C Cool down time to -25°C at starting point and ambient temperature of 20°C approx. 5 hours Cool down time to -35°C at starting point and ambient temperature of 20°C approx. 8 hours Max. operating pressure 25 bar Refrigerant 320 g, refrigerant R-452A Defrosting Hot gas defrosting Manual defrosting Yes Automatic defrosting Programmable Yes (hot gas defrost), selectable time Defrosting intervals 1 defrost in 24 h or manual hot gas defrost Defrost time 12 minutes Automatic shutoff defrost At chamber temperature of more than -5°C Object head cooling Optional feature included in model number At 120V/60Hz: 14047742464, 14047742465, 14047742466, 14047742467 Temperature range -10 to -50°C ±3K Refrigerant and quantity At 120V/60Hz: 147 g, refrigerant R-452A Max. operating pressure 25 bar Defrosting object head cooling Defrosting Electrical heater Automatic defrosting No Manual defrosting Yes Defrost duration 15 min. Defrost temperature 45°C ±2K Quick-freeze shelf Lowest temperature -42°C (±5K), at chamber temp. -35°C (+5K) Number of freezing stations 15+2 Defrosting Manual hot gas defrost Peltier element Max. difference in temperature to quick-freeze shelf -17 K, at chamber temperature of -35°C +5K Number of freezing stations 2