Door Opening Recovery and Pull-Down Time of B Medical Systems’ U201

The reliability of an Ultra-Low Freezer (ULT) is dependent on its ability to maintain the temperature-sensitive specimens it needs to store at their intended temperature. Various performance parameters such as temperature uniformity/stability (∆T), door opening recovery time (DOR), hold over time, and Pull-Down Time play a critical role in defining the reliability of the Ultra-Low Freezers. Especially during adverse events such as intensive door openings, it is critical to ensure that the internal storage temperature recovers quickly to rapidly reach the intended storage temperature range.