China Peruprimes Best-Selling Liquid Nitrogen Machine

Nuclear magnetic resonance (NMR) spectroscopy provides qualitative structural information about the type, number, existing form, connection mode and relative orientation of atoms in molecules through the spectra of different nuclei, chemical shift values, peak multiplicity, coupling constant values, peak relative strength and correlation peaks in various two-dimensional and multi-dimensional spectra.
The quantitative analysis of NMR is based on the structure analysis. The relationship between the number of protons of specific groups and the peak area of corresponding peaks is used for quantitative determination. Nuclear magnetic resonance (NMR) spectroscopy is mainly used to determine the structures of small molecules of organic compounds and biomacromolecules in solution. It is widely used in chemistry, biology, physics, materials, pharmacy and medicine
The superconducting magnet is immersed in liquid helium, and the outer layer of liquid helium is liquid nitrogen. The function of liquid helium is to maintain the superconductivity of the magnet to provide the required magnetic field environment. The purpose of liquid nitrogen is to add a "insulating layer" between the liquid helium and the external environment to reduce the volatilization of liquid helium.

ModelLPLN3LPLN-5LPLN-10-WLPLN-20-WLPLN-40-WLiquid nitrogen production (L/day)8012024050072010001200Liquid nitrogen production (L/h)351020304050Installed power(kW)891125253535 Type(AC V)380/50Hz380/50Hz380/50Hz380/50Hz380/50Hz380/50Hz380/50HzCooling formAir coldAir coldWater coldWater coldWater coldWater coldWater cold

Cryomedicine
The rapid development of clinical hypothermia in China has promoted the development of transplantation medicine, especially in the cryopreservation and transplantation of bone marrow, hematopoietic stem cells, skin, cornea, endocrine glands, blood vessels and valves. Successful hematopoietic stem cell transplantation depends on the preservation of hematopoietic stem cell viability. During the cooling and freezing process of biological samples, a certain amount of heat will be released during the phase transition from liquid to solid, which makes the temperature rise. The freezing process without controlling the cooling rate will lead to the death of tissue cells. The key to improve the survival rate of frozen samples is to accurately determine the phase transition point of biological samples, and to program the cooling program with microcomputer, so as to increase the input of liquid nitrogen during the phase transition of samples, overcome the temperature rise of phase transition samples, and make the cells pass the phase transition period safely and quickly.
Liquid nitrogen is a liquid with a low temperature of - 196 ºC and is obtained from nitrogen which occupies more than 70% of the air. Inert, colorless, non-toxic, volatile, very wide range of use. Liquid nitrogen is easy to volatilize at low temperature, so it is generally stored in a special container liquid nitrogen tank.
According to the use of liquid nitrogen purity classification, often divided into food grade liquid nitrogen, industrial grade liquid nitrogen. The purity of food grade liquid nitrogen is high, because considering the safety of human consumption, the purity reaches 5 9, that is 99.999%. The purity of industrial grade liquid nitrogen is not as high as that of food grade liquid nitrogen.
In the process of using liquid nitrogen, people often think that the safety is not good, but because of the low temperature of liquid nitrogen, it will gasify immediately when it meets air, so the safety is still guaranteed. Just pay a little attention to safety, and there should be safety awareness in any case. Performance requirements
Liquid nitrogen production: 1-50L / h
Storage capacity: 120L, environment: 10 ºC - 38 ºC
Control: PLC touch screen, power: 200v-400v, 3P, 50 / 60Hz