0°C coolers replace messy ice baths. 5152L93 will maintain a temperature below 1°C for up to 5 hours; 5152L91 will maintain temperature for up to 3-1/2 hours. Both are supplied with sixteen inserts to convert 1.5-ml holes to accept 0.2- to 0.5-ml microcentrifuge tubes. Excellent for transporting samples in vacutainers in hospitals and clinics. Coolers accommodate tube height up to 125 mm when lid is latched. Both accommodate cryogenic vials and 0.2- to 2.0-ml microcentrifuge tubes.