Controlled rate freezer (CRF)
Controlled rate freezers freeze biological materials at a controlled, reproducible rate, which is crucial for cell viability during cryopreservation.
Specifications
- Liquid nitrogen (LN₂) cooling, +30…−80 °C
- High air velocity for very fast freezing
- Logging of room and product temperature
- Automatic cycle control
Also available: blast freezer with silicone oil circuit
Two-stage primary cooling with a secondary silicone oil circuit: freezes 12 bags of 4.7 L from +20 °C to −40 °C in less than 6 hours; lowest shelf temperature −55 °C.
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