BioCold stability freezers are suitable
for FDA validation and available in sizes ranging from
20 to 44 cubic feet. These freezers are available in
stainless steel or aluminum finishes, all with solid
door(s), side wall plenum, and oversized refrigeration
system for fast temperature pull-down and recovery times.
Using hot gas bypass refrigeration with microprocessor-based
PID controls, we are able to control temperature at
± 0.3°C during normal operation. Standard temperature
range is -25°C to 0°C. Additional models to -40°C are
The test of a stability freezer is in the defrost cycle. How often is a defrost cycle required?
How long does the cycle last? And what is the temperature upset during the defrost cycle?
On our stability freezers, we combine a side wall plenum with aluminum heatsink to minimize temperature rise during defrost, so as to maintain chamber air temperaure below -15°C in a loaded chamber even during defrost cycles.
The frequency and duration of defrost cycles required is directly related to the ambient conditions of the facility
in which the freezer is located, and the number of door openings throughout the day. The more
moisture in the ambient air, the more frost will form on the coil when the door is opened,
necessitating more frequent defrost cycles.