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Procedure cooler, also known as program cryometer, is a program-controlled freezing device, which is widely used in embryo cryopreservation, long-term storage of umbilical cord blood in umbilical cord blood banks, freezing of hematopoietic stem cells and bone marrow for transplantation to leukemia patients, research and treatment of cancer tumor cells, cryopreservation and transplantation of heart valves and cornea
.
A description
of the performance and technical parameters of the PA program cooler is provided here.
The performance of PA program cooler is the use of microcomputer control technology, the use of the system independently developed software, can more accurately control the amount of liquid nitrogen application, so as to ensure that the frozen biological products at a suitable freezing rate of cooling and freezing
.
The instrument is easy to operate and has a clear
man-machine interface.
During the PA cooling and freezing process of biological samples, a certain amount of heat will be released during the phase transition period from liquid to solid, so that its temperature will rise, and if the cooling rate is not controlled, the freezing process will lead to tissue cell death
.
PA program cooler accurately determines the phase change point of biological samples, and prepares the cooling program with a microcomputer in order to increase the amount of liquid nitrogen input during the sample phase transition, overcome the temperature of the phase change sample, and enable the cells to safely and quickly pass the phase transition period, which is the key link
to improve the survival rate of the frozen sample.
PA program cooler main technical parameters: Ø temperature control range: 40
.
C~-180
。
C.
Ø Temperature accuracy: wu difference <0.
5
.
CØ Cooling speed: 0.
1
.
C/min~50
.
Optional Ø heating speed in C/min range: 0.
1
.
C/min ~30
.
C/sub-range optional Ø System functions: 1) display function; 2) Programming function; 3) Operation control function; 4) Data processing function; 5) System upgrade function
.
