Why Lab Freezers are Very Importamt
The are many highly critical materials stored in lab freezers although they may seem like the freezers we have at home although slightly bigger perhaps. Temperature is important for these critical materials because any temperature change can diminish their effectiveness and this is why lab freezers need to have constant regulated temperatures. Some lab freezers are small and can fit underneath a counter, some are regularly-sized upright freezers and there are those that are extremely large similar to a walk-in freezer. The lowest temperature that a lab freezer should be kept is a slow as -85 degrees Celsius, way below the average house hold freezer temperature range which is between 0 and -10 degrees only.
There are many uses of lab freezers. Some of the things you can find in a lab freezer includes serums and tissue samples, samples of DNA and RNA, protein extracts, and bacteria strains. In hospitals, lab freezers are used to preserve organs and blood while pharmacies use their freezers to keep medicines. The reason why specimens are kept preserved and stable is because they can degrade in time.
You can also find a general purpose lab freezer which is similar to a home refrigeration unit. They also have shelves both in the unit and in the door, and rubber gaskets to prevent the cold from escaping, just like a home refrigerator. Their temperatures, though, are lower than our refrigerators since theirs is usually kept between -15 to -25 degrees Celsius. while our freezers are only up to -10 degrees Celsius. These lab freezers have to be kept locked to maintain temperature and they also have an LCD display with the temperature reading and this is for the purpose of preventing the opening of the lab freezer to check temperature.
There are many different kinds of lab freezers. One type of freezer can reach very low temperatures and consists of freezer racks that can store thousand of samples. There is another super low lab freezer reaching the temperatures of -150 degrees Celsius without using liquid nitrogen.
If you are storing flammable materials, a lab freezer is very important. 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.
Another type of freezer is the blood bank freezer that is used to store blood and plasma. Since regular freezers temperature cannot be controlled when doors are opened, blood cannot be stored there. Blood bank freezers are durable and require very little maintenance because of their importance in saving lives and blood has a very short shelf life.