Boekel Polar Block II (m/n 260013) This benchtop freezer is ideal for intermediate term storage of restriction enzymes, DNA libraries or other labile reagents, and applications requiring subfreezing temperatures. Freezer is useful for keeping samples cold on the benchtop as an alternative to an ice bucket. Active cooling eliminates worry of leaving samples on bench too long in freezer blocks. Peltier technology is environmentally safe. No compressors or CFC's. Features a digital LCD temperature display and is supplied with a removable machined aluminum block. Each block has a self-contained recessed handle for easy transport. Will reach and maintain temperatures within 30 minutes.