ABS Ultra Low Temperature Freezers

Category Upright Lab Freezers
Manufacturer American BioTech Supply
Country of manufacture the United States of America

The ABS Ultra Low Temperature Freezer delivers rich features and benefits for the most demanding cold storage applications. Designed to utilize standard racks, this unit offers high efficiency with low noise by utilizing two high efficiency compressors that keep decibel levels low, while still having 300 BTUh reserve capacity. The interior of the unit features a triple gasket seal, vacuum relief port, five double walled insulated doors and 5 ½ - 6” of Urethane insulation in critical areas.

Units are made in the USA and are UL and C-UL listed.


  • One solid swing exterior door, right hinged, not reversible
  • Five insulated inner doors
  • Microprocessor controller specifications
  • Touch pad keys and four line display for easy programming
  • Large LED temperature readout
  • Audible and visual alarms with silence key for audible alarms
  • Programmable high and low temperature alarm set points
  • Programmable access code to limit access to set points and controller configuration
  • Automatic voltage boost to compensate for low line voltages
  • Normally open, normally closed alarm contacts and 4-20mA signal available to connect to central alarm system
  • RS-232 serial output
  • Battery backup on electronics during power outages
  • Temperature range: -50°C to -86°C
  • Four stainless steel shelves, adjustable on ½” centers
  • Cam action handle for one hand latching of exterior door. 
  • Handle supplied with key lock and door switch for audible and visual alarms
  • Four heavy duty swivel casters with locks
  • Vacuum relief port for quick access after door closures
  • CFC-free refrigerant
  • Two year parts and labor warranty, plus an additional three year compressor parts warranty
  • UL/C-UL Listed
  • NEMA plug configuration
  • Cascade refrigeration system

NOTE: American Biotech Supply Ultra Low Temperature Freezers are manufactured at the time the order is placed then go through extensive testing to ensure quality. A lead time of approximately 5 weeks should be expected.

      Key Attributes
      Min. Temperature -50°C to -86°C
      Cubic Feet 17 to 25
      Alarms Yes
      Controls Digital
      Defrost Manual
      Electrical 115V or 230V, 60 Hz
      Warranty (years) 2
      Weight (lb) 700 to 829
      Width (in) 37.6 to 49
      Depth (in) 36.3
      Height (in) 79.6
      Manufacturer Specifications
      ABT-115V-1786 ABT-230V-1786 ABT-115V-2186 ABT-230V-2186 ABT-230V-2586
      17 Cu.Ft. 21 Cu.Ft. 25 Cu.Ft. 
      Exterior: 37.6"W x 36.3"D x 79.6"H Exterior: 43.3"W x 36.3"D x 79.6"H Exterior: 49"W x 36.3"D x 79.6"H
      Interior: 23.4"W x 23"D x 50"H Interior: 29.1"W x 23"D x 50"H Interior: 34.8"W x 23"D x 50"H
      2" box capacity: 320 ea. 2" box capacity: 400 ea. 2" box capacity: 480 ea.
      Rack capacity: 20 ea. UF442 racks Rack capacity: 25 ea. UF442 racks Rack capacity: 30 ea. UF442 racks
      115V, 60Hz, 16 amp, HP: ½ x ½ 230V, 60Hz, 10 amp, HP: ½ x ½ 115V, 60Hz, 16 amp, HP: ½ x ½ 230V, 60Hz, 10 amp, HP: ½ x ½ 230V, 60Hz, 10 amp, HP: ½ x ½
      NEMA 5-20 NEMA 6-15 NEMA 5-20 NEMA 6-15 NEMA 6-15
      700 lbs. 759 lbs 829 lbs

      Is the door locking mechanism on the ABS Ultra Low Temperature Freezers compatible with padlocks?

      The ABS ULT freezers have a key lockable door, but they are not compatible with padlocks.


      What is the weight capacity of each shelf?

      50 pounds.


      What is the temperature stability / differential of the ABS ULT freezers?

      The temperature differential about the setpoint is typically set to +/- 5°C, as measured by a probe in air. The differential can be factory- or user-defined to a different range, however it is recommended that the differential not be set below +/- 3°C as the rapid cycling will increase wear on the compressors and decrease compressor life.


      What is the insulation used and how thick is it?

      The insulation thickness is 5.5 in on the sides and 6 in  at the rear. The material is FIP urethane.


      What specific certifications do the American Biotech Supply ULT freezers have?

      • UL 471 – Standard for Commercial Refrigerators and Freezers
      • Canadian National Standard , CSA C22.2 No. 120, Refrigeration Equipment.


      Is it possible to have an access port installed in the ABS Ultra Low Temperature Freezers?

      Yes, it is possible to have a 1" access port installed for a modest fee, however due to the location of refrigerant lines and other components, it would need to be in the roof of the unit. Alternatively, if a 1/2" port would suffice, one can be created in the back of the unit.


      How long will the freezer stay cold in the event of a power outage?

      During testing all ABS Ultra Low Temperature Freezers are put through a test in which they are set to -80°C, then power is removed and they need to maintain a temperature below -50°C for at least 5 hours.


      I have a 208 V line. Do I need to be worried about providing enough voltage to a 230 V ABS Ultra Low Freezer?

      A 230 V American Biotech Supply ULT freezer can be used on a standard 208 V line without issue. They make use of an internal boost transformer which compensates for low voltage conditions.


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