Compact, convenient, and reliable apparatus for intermediate term storage of restriction enzymes, other labile reagents, and applications requiring sub-freezing temperatures such as ethanol precipitation. Uses a solid state, air cooled thermoelectric device that has a long and proven record for efficient and dependable service, Equipped with a digital LCD temperature display and supplied with a removable machined aluminum block which accommodates 14 x 1.5m1 microcentrifuge tubes. Additional blocks are available. Reaches and maintains temperatures 35°C to 39°C below ambient (typically -15°C) in approximately 30 minutes. 110V, 100 Watts. Dimensions: Polar Block 11L x 8"H; Block Modules 2.25L x 3.25W x 1.5"H.
