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Star Republic: Guide for Biologists

Storage freezer

Edited by Chang Zhu
Many reagents used in biomedical labs need to be stored frozen. For storage at -20 C, common household refrigerators can be used. However, make sure the freezer is not self-defrosting. A self-defrosting freezer temporarily raises temperature to minimize ice accumulation, which may cause repeated freeze and thaw of temperature-sensitive reagents and destroy their activities.

Storage boxes that are designed to minimize temperature fluctuations can be used for storing enzymes and other reagents.