Category Archives: Ultra Low Temperature (ULT) Storage

Monitoring temperature in an ultra low temperature freezer (ULT) is incredibly important for sample safety and protection.

How ULT Freezers Work: A Muli-cycle System Ultra low temperature freezers work by using a multi-compressor system to achieve temperatures as low as -86°C (-123°F). Through a process of compression, condensation, expansion, and evaporation of their refrigerants, a ULT can create an environment of extreme cold. Here’s a closer look into the process.   Compressors […]

Check your Ultra Low Temperature Freezer for Temperature Accuracy: What Tools to Use? The simplest way to check the temperature accuracy of your ultra low temperature freezer is to use a calibrated, NIST-traceable data logger or temperature probe. Place the probe inside the cabinet, ideally near the center where samples are stored. Check this temperature […]

ULT Freezer Maintenance 101 Science depends on ULT storage. At temperatures around -80°C, an ultra low temperature freezer empowers scientific research by storing cell cultures, drugs, tissue samples and more. But these freezers require specialized maintenance that easily gets neglected in the daily pace of scientific work. A failed seal, frost build up, or a […]