So-Low U85-18 Upright Ultra-Low Temperature Laboratory Freezer
This listing is for a So-Low U85-18 upright ultra-low temperature laboratory freezer. This is an 18 cubic foot ULT freezer designed for laboratory, medical, biotech, pharmaceutical, research, university, and industrial cold-storage applications.
Manufacturer specifications list the U85-18 as an 18 cu ft / 505 L upright ultra-low freezer with an internal temperature range of -40°C to -85°C. The unit uses a cascade-style refrigeration system with two hermetic compressors, manual defrost, gravity-flow air circulation, and five stainless steel inner doors.
Key Specifications
- Manufacturer: So-Low Environmental Equipment Co.
- Model: U85-18
- Type: Upright ultra-low temperature freezer
- Capacity: 18 cu ft / 505 L
- Temperature range: -40°C to -85°C internal chamber temperature
- Voltage: 115V, 60 Hz, single phase
- Amps / run amps: 20A / 15A
- Plug: NEMA 5-20
- Refrigeration: Cascade-style system
- Compressors: 2 hermetic compressors
- Defrost: Manual
- Air circulation: Gravity flow
- Interior: Zinc-coated galvanized steel
- Exterior: Powder-coated steel
- Inner doors: 5 stainless steel inner doors
- Shelving: 4 adjustable shelves plus base shelf
- Controller: Microprocessor digital controller
- Alarms: High/low temperature, power failure, low battery
- Alarm relay: Dry contacts
- Casters: 4 swivel casters with locks
- Shipping weight: Approx. 900 lb
The manufacturer lists exterior dimensions as 36″ W x 36″ D x 79.5″ H and interior dimensions as 23″ W x 26″ D x 51.25″ H. The dimensional drawing lists the unit net weight at 725 lb and notes that the door can open 180° to reduce pass-through depth to approximately 32″ for doorway clearance.
Condition
Used unit in working condition. Unit has been tested to -85°C. Cosmetic wear, scuffs, scratches, label residue, discoloration, or other signs of normal laboratory / industrial use may be present. Please review photos carefully for exact condition.
Included
- So-Low U85-18 ultra-low freezer
- Installed shelves shown in photos
- Inner doors shown in photos
- Accessories shown in photos only
No racks, probes, CO₂ backup system, chart recorder, temperature recorder, keys, cylinders, or additional accessories are included unless shown or specifically stated.
Important Electrical Note
This model is listed as 115V, 60 Hz, single phase, with a NEMA 5-20 plug configuration and 20A / 15A electrical rating. Buyer is responsible for verifying facility electrical compatibility before purchase.
Shipping
Freight shipping required due to size and weight. Buyer to arrange pickup or freight. We can assist with packaging and load onto carrier of your choice.

















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