Bel-Art Cryo-Safe Mini Quick-Freeze Cooler, 3x4 Layout, Holds 0.5 or 1.5 mL Tubes, White

Can be used for up to 45 minutes to rapidly and repeatedly chill biological samples for use in molecular biology. Applications such as ethanol precipitation of DNA/RNA samples are made easy, eliminating the inconvenience of traditional dry ice and alcohol baths. After storing the polycarbonate cooler overnight at -20ºC, inserted samples freeze within a few minutes. Holds twelve 0.5 or 1.5ml microcentrifuge tubes. There is no direct contact between the tubes and the insulating solution, so labels and markings are safe. Coolers are stackable and have rubber feet to prevent sliding on the lab bench. A clear polycarbonate lid shows positions of tubes and is keyed to correspond with positions printed on cooler. Molded side handles allow secure grip for transfer. Use included insert to hold 0.5ml microcentrifuge tubes. Store at -20ºC for 24 hours prior to use.