A laboratory refrigerator or Lab freezers have a clear and fundamental function; those units are utilized to cool or freeze samples for preservation. Normally, refrigerators are used to store samples in a temperature between – 5 and 15 degrees Celsius, while freezers will normally store samples in a temperature between – 25 and – 15 degrees Celsius.
Some laboratory freezers are used to store biological samples such as vaccines in a significantly lower temperature. Cryogenic freezing is also utilized in some labs, but requires specialized equipment that is capable of creating and tolerating exceptionally low temperatures. Ultra low temperature freezers usually -50 degrees C and under commonly use a double compressor cascade kind of system to reach these low temperatures. The first compressor is used to get a temperature of approximately -40 degrees C, and the next compressor kicks in to attain the lower temperature that is needed. These laboratory freezers will be usually be noisier than a -20 degrees C freezer, create more heat output into the room and will use more energy. They are also more expensive to repair than a normal laboratory freezer or refrigerator if the compressor has to be replaced, because this will require a repair technician who specializes in these somewhat exotic compressors.
Lab refrigerators and freezers include equipment for storing samples and special instrumentation used for conducting experiments requiring precise temperature control. By way of instance, a lab refrigerator may be used to install Paper Chromatography apparatus within the refrigerator chamber. Refrigeration and freezing Equipment can also be used for the storage of medical or pharmaceutical materials. A blood bank utilizes a lab refrigerator to maintain the quality of its blood supply. Laboratory refrigerators and laboratory freezers that store blood and blood products must satisfy an assortment of quality and regulatory criteria for obvious reasons. They normally have an alarm system to warn lab personnel of an equipment failure. Plasma can be stored suspended in a plasma freezer for a protracted period of time. Since the normal expiration date is 1 year from the date, the issue of maintaining an adequate blood supply is significantly reduced. Pharmacies can also use a lab refrigerator to store vaccines, drugs and other temperature sensitive chemicals.
Laboratory refrigerators and Laboratory freezers contain equipment for freezing blood plasma or other blood products for future use. Some lab freezers are utilized to store enzymes or other biological reagents used to run evaluations. Laboratory refrigerators and laboratory freezers could be standalone, vertical units or may fit under the lab counter. A lab freezer might also be fitted with locks to limit entry, and might even be made to safely insulate flammable substances from electric sparks.