Thermo Fisher Scientific Inc., the world leader in serving science, today announced that its Thermo Scientific Nalgene Mr. Frosty line of freezing containers now accommodates 3.6, 4.5 and 5.0 mL cryotubes. Designed for use with the complete range of Thermo Scientific Nunc and Nalgene^® cryogenic storage tubes, the Mr. Frosty® portfolio provides a flexible solution for any tube size. The freezing containers are safe, easy-to-use and enable simple cooling of samples at an optimal rate of -1 °C per minute, effectively maintaining cell viability. Requiring only 100 percent isopropyl alcohol and a mechanical -70 to -80 °C freezer, the Mr. Frosty containers are ideal for any laboratory requiring cost-effective and repeatable cryopreservation of cells.  

The full range of Nalgene Mr. Frosty freezing containers feature inexpensive, reusable and convenient devices for cooling biological samples at the recommended controlled cooling rate. With units and inserts available for 1, 1.2, 1.8, 2, 3.6, 4.5 and 5 mL tubes, these containers provide the widest tube compatibility currently available.

For further information, please visit www.thermoscientific.com/mrfrosty. 

Thermo Scientific is part of Thermo Fisher Scientific.