Process temperature drop in simple terms is a kind of the program to control temperature, slowly gradually reduce preservation temperature, lest too fast reduction temperature, ice crystals prick cryopreserved samples (
Such as cells, embryo and cooling fast ice crystals to prick the cell wall)
, so as to make the sample failure.
Also known as programmed temperature drop, program temperature drop, embryo freezing, frozen testers, embryo, etc.
program temperature drop main use is as follows:
* genetic engineering medical research
* * plant tissue
* pharmacology & ndash;
Organization * the same donor bone marrow
* cancer research & ndash;
Tumor cells
* (IVF
In vitro fertilization (ivf))
—
Embryo, sperm
* blood bank & ndash;
HLA, lymphocyte and RBC
* microbiology & ndash;
Viruses, bacteria and cell lines
* primitive culture (
The food industry)
—
Cool, beer, milk, yeast
* HLA match & ndash;
Organ transplantation
* organization library & ndash;
Skin, bone, heart valves, cornea, skeletal muscle
program temperature drop technique parameter:
a, program frozen instrument main technical index
range of temperature control: -
180 ℃ and 40 ℃
temperature accuracy: error & lt;
0.
5 ℃
the cooling speed: 0.
1 ℃ / min ~ 30 ℃ / min range of optional
heating speed: 0.
1 ℃ / min ~ 30 ℃ / min range of optional
instrument structure (
Standard configuration)
:
microcomputer system: a built-in refrigeration control card, as long as the software will be run when frozen.
cooler: inside and outside the whole stainless steel structure, the refrigeration capacity machine is not less than 200 * 200 * 200 mm.
Can accommodate 160 or bags eight freeze pipe.
dewar liquid nitrogen tank and liquid nitrogen pressurizer: liquid nitrogen pressurizer is installed on the 30 lisheng liquid nitrogen tank, the tank pressurization valve to be pressure stability.
2, program temperature drop parameter table
models
technical parameter
TF -
PRL -
PA-
Type I
range of temperature control: 40 ℃ ~ -
90℃;
Cooling speed: 0.
1 ℃ / min ~ 30 ℃ / min range of optional
TF -
PRL -
PA type
range of temperature control: 40 ℃ ~ -
110℃;
Cooling speed: 0.
1 ℃ / min ~ 40 ℃ / min range of optional
TF -
PRL -
PA-
Type II
range of temperature control: 40 ℃ ~ -
150℃;
Cooling speed: 0.
1 ℃ / min ~ 40 ℃ / min range of optional
TF -
PRL -
PA-
Type III
range of temperature control: 40 ℃ ~ -
180℃;
Cooling speed: 0.
1 ℃ / min ~ 50 ℃ / points within the scope of the optional
program temperature drop:
