Nalgene* Quick Chill Unit, Polycarbonate

Rapidly and repeatedly chills biological samples for use in molecular biology applications such as ethanol precipitation of DNA/RNA samples. The Quick Chill unit can be used repeatedly for up to 45 minutes, eliminating the inconvenience of dry ice/alcohol baths. Durable polycarbonate and pre-filled with a non-toxic insulating solution. Holds twelve 0.2 to 1.5 ml microcentrifuge tubes. There's no direct contact between the tubes and the insulating solution so labels and markings won't come off. Break-resistant, stackable design. Rubber feet keep the Quick Chill unit from sliding on the bench surface.
Performance with microcentrifuge tubes:
Sample, volume time* to reach -20°C (IPA**) or 0°C (water)
Water, 1.5 ml 3.2 min.
Water, 0.5 ml 4.0 min.
IPA, 1.5 ml 2.0 min.
IPA, 0.5 ml 2.8 min.
* Units at room temperature
** Isopropanol