R508b is a widely used ultra-low temperature refrigerant, which is a common substitute for Freon and R13 refrigerants. However, it needs to be cleaned before use and should not be mixed to avoid other chemical reactions between the two that may cause equipment damage.
R508b is mainly used in environmental testing chambers/equipment (cold and hot shock testing machines), freeze-drying machines/freeze dryers, ultra-low temperature refrigerators or freezers, blood bank refrigerators, biochemical testing chambers and other cryogenic equipment (including scientific research refrigeration, medical refrigeration, etc.), and is commonly used in the low-temperature stage of these stacked refrigeration systems.

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