Lab Freezers and Fridges
There are chemicals that have to be kept at or below certain temperatures in order for them to maintain their potency or even stability. Lab freezers and fridges are standard equipment for laboratory storage. They come in different designs for different functions.How cold do laboratory freezers get?
Most low-temperature laboratory freezers are capable of reaching temperatures of negative 40 degrees Celsius. Typical household deep freezing units get down to a temperature of about -20 degrees Celsius. Also, if enhanced with high-grade refrigerants, this cold storage equipment can achieve temperatures as low as negative 85 degrees Celsius.Are there different types of freezers and fridges?
There are quite a few types of laboratory freezers and refrigerators. Their specifics vary in relation to their specific purpose in a laboratory. Here are the basic categories that they can be broken down into:
- Laboratory freezers: The basic model of laboratory fridge equipment. This type of freezer is more suited for storage in pharmaceutical and biological uses.
- Explosion-proof freezers: These freezers are designed to prevent explosions from within and outside of the fridge. The temperature is adjustable on these units.
- Enzyme freezers: Fridges designed for enzyme freezing applications tend to dip to around -20 degrees Celsius, and many have self-defrosting capabilities.
- Flammable material freezers: These are designed specifically for the storage of volatile materials and substances. They are made with chlorofluorocarbon-free foam insulation for added security against combustion. They have hermetically sealed compressors, meaning that they are airtight, and you can adjust the temperature.
- Plasma freezers: In this application, the fridge is designed for fast heat removal from the plasma while remaining efficient for storage. Plasma fridges are common in blood banks and hospitals and are therefore subject to FDA approval.
- High-performance lab freezers: These particular freezers are constructed to meet higher efficiency standards to suit pharmaceutical purposes as well as having the ability to safely store flammable materials. They must meet U.S. Pharmacopeia and NFPA standards. Because of the need for versatility and multifunctionality, these tend to have temperature control abilities.
- Laboratory refrigerators: These are meant for chilling and not freezing materials. The typically chill to a temperature of around 4 degrees Celsius, and many come with a measure of temperature control. Basic laboratory fridges are suitable for a number of storage applications.
Refrigerators require that you attach the casters or legs if they aren't already attached. Extra-low temperature freezers require that the condensate vaporizer is installed. First, you must attach the power cord to the vaporizer and then attach the vaporizer bracket to the back of the unit using the included screws. Never plug refrigerators into an extension cord.