Cooler for microtubes

Designed in PC to keep reagents and enzymes cool. Capacity for 12 microtubes or cryotubes of up to 2 ml, array of 3x4. Protects samples from temperature fluctuations. The base is filled with non-toxic gel. Yellow color. Will maintain temperature approximately for 1 hour on the bench. Freeze for 24 hours at -20ºC to -25ºC prior to use