问题
From 1 to 8 hours by product size.
Blast freezing time depends on product size and density. Thin items like fish fillets freeze in 1 to 2 hours. Larger cuts of meat take 3 to 4 hours. Whole tuna or large frozen blocks can take 6 to 8 hours. A standard freezer takes 12 to 24 hours for the same load.
你知道吗？
The freezing time often depends more on product thickness than weight. A thin product can freeze quickly, while a thicker item of the same weight may take much longer because heat has farther to travel. 
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