So-Low Enironmental Chamber
model A21-100

Characteristics:

• Refrigeration Charge system 1 : R-22 (please note that the refrigerant has been drained from this compressor)
• Refrigeration Charge system 2: R-13
• Max Temperature: -18 degrees Celsius
• Min Temperature: -73 degrees Celsius
• Serial Number: 8586448
• Internal Chamber Dimensions: 35 x 25 x 10 inches per shelf (4 shelves)

Unit powers up, but is otherwise untested. One of the compressors has apparently been drained of refrigerant, and we cannot say whether the other one has a full charge or not.