-20°C Labtop coolers for microtubes or cryogenic vials Enclosed, 32 and 12-place microtube coolers Accomodates 0.5 and 2.0 mL microtubes or cryogenic vials 5152M16 maintains temperature below -15°C for two hours and 5152M18 maintains it for one hour. Blue polycarbonate lower…