What is dry ice?
Dry ice is actually solid carbon dioxide, which is condensed into a colorless liquid at a pressure of 6250.5498 kPa and then evaporated rapidly at low pressure to form dry ice.
What are the uses of dry ice?
Dry ice is used in a wide range of applications, such as artificial rainfall, preservation of fresh food, fire extinguishing, cryotherapy, preservation of blood plasma and medical drugs in hospitals, etc. There are numerous applications in food, hygiene, industry and catering.
What kind of storage conditions do I need for dry ice?
Because the solidification temperature of dry ice is -78.5, it starts to volatilize when it reaches -78 degrees, it is very easy to volatilize and sublimate into non-toxic, tasteless, 600-800 times larger than the solid volume of the gas carbon dioxide, so dry ice can not be stored in completely sealed volume containers, such as plastic bottles, dry ice and liquid mixed easily explode, so dry ice must be stored in a special freezer. Dry ice in minus 60 degrees and minus 40 degrees ultra-low temperature refrigerator can be short-term storage 5-10 days, but because the temperature is greater than the dissolution point of dry ice, dry ice will have volatilization, the production of gas, so only suitable for short-term storage of small amounts, placed in minus 80 degrees below ultra-low temperature refrigerator can be long-term storage. Dry ice must be stored and used correctly to prevent unnecessary injuries caused by incorrect dry ice handling.
Dry ice, as a refrigerant for cold chain transportation, has thus been pushed into the limelight due to the extreme low temperature transportation requirements of -70°C for Pfizer/BioNTech vaccines. A large number of medical institutions in Africa choose to use ultra-low temperature freezers to store dry ice, which starts to evaporate at -78°C, so they have to choose freezers with lower temperatures. The DW-HW138 and DW-HW328 ultra-low temperature freezers developed by Meling Biomedical are very suitable for storing dry ice, and the temperature of minus 86 degrees makes the dry ice not easy to volatilize. The ultra-low temperature freezer is slow to dissipate cold when opening the door, and the cover is sealed and pressed and sunk with good insulation and cooling effect. Meling biolmedical -86 ℃ ultra-low temperature freezer DW-HW138 has a high-precision microcomputer temperature control system, temperature control accuracy of 0.1 ℃; 14 kinds of sound and light alarm system (high and low temperature alarm, sensor failure alarm, high ring temperature alarm, open the door alarm, voltage abnormalities, power failure alarm, condenser dirty alarm, battery power low alarm, system failure, etc.), items stored more safely; comes with USB temperature recorder, recorder and controller work with long time backup battery; stainless steel inside, painted steel plate outside, 6 units of casters for easy handling. The top door has key lock. Two times foam technology with double seal design. 152mm super thick insulation layer. Besides used to store dry ice, ultra-low temperature horizontal freezer can also be used as laboratory refrigerator, medical freezer, suitable for hospitals, health epidemic prevention system, scientific research institutes, biological engineering, university laboratories, military enterprises, etc.
