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Designed for medical and scientific applications requiring storage of reagents, pharmaceuticals, biologicals, and other commonly used laboratory materials such as primers, siRNA molecules and FBS.

Product Selection

ModelReplacementCapacityTemperature RangePlug TypeElectrical
UEN2320ATSX2320EA23.3 cu. ft., 659L-20°CNEMA 5-20115V 60Hz
UEN2320DTSX2320ED23.3 cu. ft., 659L-20°CNEMA 6-15208/230V 60Hz
UEN3020ATSX3020EA29.2 cu. ft., 826L-20°CNEMA 5-15115V 60Hz
UEN3020DTSX3020ED29.2 cu. ft., 826L-20°CNEMA 6-15208/230V 60Hz


  • Choose Thermo Scientific Revco Enzyme Freezers for storage applications where slight intermittent coil warming during an auto-defrost cycle is not desired.
  • Our manual defrost -20°C upright freezers feature microprocessor control system, gravity air circulation, industrial-quality cabinet construction and extra-strength refrigeration compressors designed for industrial, clinical and scientific use.

Key Features:

  • Operating temperature: -20°C.
  • Preset temperature setpoint.
  • Upright 23.3 cu. ft. (659L) capacity.
  • Gravity convection air system for maximum stability without blowers or fans.
  • Manual defrost.

Microprocessor Control System:

  • Icon-based controls and displays.
  • Graphic thermometer is steady green when temperature is normal, flashes top bar for overtemperature, flashes bulb for undertemperature.
  • Large, easy-to-read digital display of temperature within 0.1°C.
  • Audible/visual warnings for overtemperature, undertemperature, or power failure.
  • Key-operated OFF/ON/ALARM ON master switch for setpoint security.
  • Push-button alarm test.
  • Remote alarm contacts.
  • Alarm silence, ringback, and auto reset.
  • Battery backup system.


  • Scratch-resistant, painted cold-rolled steel interior and exterior finishes.
  • Solid door with full-length handle and keyed lock—self-closes against closed-cell peripheral gasket.
  • High-density, CFC-free urethane foam insulation protects cabinet from ambient temperature fluctuations and minimizes operating costs.
  • Hermetically sealed heavy-duty, industrial-grade compressor.
  • Nine epoxy-coated, open-wire shelves, adjustable in 1in. (2.5cm) increments.
  • Adjustable leveling feet.

Ordering Information:

  • Alarm systems, temperature chart recorders, and power monitors available separately.
  • Contact our Customer Service Department for details.


  • 45 high-impact plastic enzyme storage bins for easily accessible inventory.
  • Bin overall dimensions (L × W × H): 25.25 × 4.25 × 3in. (64 × 11 × 8cm); labels not provided.


  • Valid in the USA only.


Thermo Scientific Revco Enzyme Freezers Product Brochure