Although Lab freezers may look like freezers used in your home or perhaps slightly bigger than it, they are used to store critical materials, some of which are hazardous. These lab materials are also to be kept at constant, regulated temperature. If you will know the different types of lab freezers, there are small ones that can be placed under any counter, the regular-sized freezers and the walk-in freezers which are extremely large. While the lowest temperature of our home freezers reach -10 degrees Celsius, there are lab freezers that are kept at extremely low temperatures of -85 degrees Celsius.
Lab freezers are used for many different purposes. You can find strong serums and tissue samples, bacteria strains, samples of DNA and RNA, and protein extracts in a lab freezer. These freezers are also used to preserve organs and blood in hospitals, and to keep medicines in pharmacies. Some of the specimens that are kept in the lab freezer can degrade over time and so it is important to keep them preserved and stable.
Like your home refrigerator unit, there are also lab freezers that are used for general purpose. And just like a home refrigerator, these lab freezers also have shelves inside and in the doors and in order to prevent the escape of the cold, there are rubber gaskets to protect it. But, these freezers are kept at very low temperatures usually between -15 to -25 degrees Celsius. These lab freezers have a locking device and in order not to keep opening the lab freezer to check its temperature, it comes with an LCD temperature display so that temperatures can be monitored constantly.
There are many different kinds of lab freezers. There are low temperature freezers that can store thousands of samples in many freezer racks and reach very low temperatures. There is another super low lab freezer reaching the temperatures of -150 degrees Celsius without using liquid nitrogen.
Flammable materials can also be stored in lab freezers. There are freezers that are designed especially for safe storage of volatile materials that have CFC free, formed-in-place insulation and hermetically sealed compressors. If you are freezing critical biological or life science materials then the freezer should not only comply with OSHA standards but also have alarms, monitors and back up performance features.
There is also a freezer call the blood bank freezer used to store blood and plasma. Since regular freezers temperature cannot be controlled when doors are opened, blood cannot be stored there. Since blood has a very short shelf life, blood bank freezers are durable and require little maintenance.