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A new safety standard for American refrigerators

A new US standard allows household fridges and freezers to use up to 150 grams of hydrocarbon refrigerants instead of the current limit of 57 grams.
The US Underwriters Laboratories (UL) has adopted a new safety standard, UL 60335-2-24 Edition 2, that will allow domestic fridges and freezers to use up to 150?g of hydrocarbon refrigerants like propane and isobutane. Until now, only 57?g were allowed by the previous version of the standard. US lag...

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