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MDF-C2156VAN -150°C Cryogenic Freezer | Laboratory Freezer 

The Panasonic cryogenic Freezer stores samples at -150C, well below the recrystalisation temperature of -130°C.

Why Freeze to -150C in a cryogenic freezer

An important factor to consider when preserving cells or tissue, when using a cryogenic freezer, is to prevent amorphous ice crystals from recrystallizing within and outside the cells. Cryogenic freezing is therefore important to retain cell viability during cryopreservation.

Samples that are maintained in an ultra-low temperature freezer at -150°C which is far lower than the recrystallization point (-130°C for pure water) can be preserved semi-permanently. 

Cryogenic freezer preservation at ultra-low temperatures maintains vitrification without crystallization occurring inside and outside cells. In contrast to conventional liquid nitrogen preservation containers, freezer preservation has numerous advantages: no sample contamination, no sudden liquid eruptions as well as low operational costs. Panasonic freezers make long-term storage below the recrystallization point easier and more stable than ever before.

This Cryogenic Freezer features a specially designed compressor and a cascade refrigeration system for rapid and durable ultra-low temperature pull-down. This cutting edge technology also ensures that noise levels emitted are kept to a minimum. 

150°C cryogenic freezers use patented revolutionary vacuum insulation cabinet construction that reduces the wall thickness from 175mm to 135mm (6.9” to 5.3”) and achieves up to 25% more storage capacity than a conventionally insulated freezer without increasing the footprint.

Cryogenic freezer: Micro-processor Temperature Control with LED Digital Display

Extremely accurate, easy-to-read display. The temperature inside the cryogenic freezer can be set and monitored easily by means of the microprocessor temperature control with an LCD digital display. The display uses pop-up menus and provides a graphical display with data-logging functions. Temperature data is electronically recorded for either one week or one month periods. The history of lid opening and closing is recorded for lid openings that exceed 2 minutes.

The display also shows status alert monitoring. The ambient conditions and system conditions are continually monitored to provide an alert of any abnormalities before a potential problem happens.

Cryogenic freezer: Hot line for secure sealing

Moisture condensation at the top edges of the cabinet due to differences in temperature inside and out causes frost and icing problems that may reduce heat insulation efficiency and obstruct door movements. These problems are prevented by the “hot line” by means of which hot gas from the higher temperature circuit is circulated through the problem areas.