Quick Chill^™ cooler 

A reusable, economical alternative to dry ice-solvent baths for quickly chilling specimens. The unit is molded of durable polycarbonate and filled with a non-toxic solution. After thorough cooling in an ultra-cold freezer, unit can be used on benchtop for up to 45 minutes to bring alcohol solutions to -20 °C in 3 min or less; aqueous solutions to 0 °C in 4 min or less. There is no direct contact between sample tube and chilling solution, so labels and markings stay on. Unit holds 12; 1.5 mL microcentrifuge tubes; adapters are included to modify holes for 0.5 mL tubes. Non-skid rubber feet keep the unit from sliding on the benchtop.

Quick Chill is a trademark of Nalge Nunc International.