While lab freezers might look like the freezers we have at home, these are used to store very critical materials which can be hazardous and at the same time, materials for saving lives. What is important with the materials stored inside lab freezers is that they need to be kept at constant, regulated temperatures. Lab freezers comes in different sizes from the extremely small that can fit under any counter, the regular-sized upright freezers which are similar to our home freezers, and the extremely large walk-in freezers. 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.
There are many purposes for using these lab freezers. You can find strong serums and tissue samples, bacteria strains, samples of DNA and RNA, and protein extracts in a lab freezer. In hospitals, lab freezers are used to preserve organs and blood while pharmacies use their freezers to keep medicines. To prevent degradation of specimens, they are kept in the lab freezer t constant temperature.
You can also find a general purpose lab freezer which is similar to a home refrigeration unit. 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. These lab freezers are much colder than our home freezers since they can reach as low as -25 degree Celsius compared to our -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.
Since there are many applications for lab freezers, you can also find different types. One type of freezer can reach very low temperatures and consists of freezer racks that can store thousand of samples. There are also super low lab freezers which can reach cryogenic temperatures of -150 degrees Celsius without having to use 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. These freezers meet OSHA standards but they need alarms, monitors, and back up features if freezing critical items or high value life science materials.
The blood bank freezer is a important freezer product, and this is used for storing 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.