controlled-rate freezer
Quick Summary
A controlled-rate freezer is a technology used in cryopreservation, which is the preservation of cells and tissues by freezing. These freezers deliver liquid nitrogen into a chamber where cell suspensions are placed. By carefully controlling the freezing rate, they prevent rapid dehydration and the formation of damaging intracellular ice crystals.1
This controlled process typically cools cells from room temperature down to approximately -90°C (-130°F) before they are transferred to a liquid-nitrogen freezer for long-term storage. This technology is crucial for preserving various biological materials, including hematopoietic stem cells, embryos, and sperm, thereby enhancing their viability for future therapeutic uses.1
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