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适用范围：This British Standard specifies requirements for commercial butane and commercial propane as supplied for general domestic and industrial fuel purposes. It applies to these products in cylinders and in bulk. NOTE. The requirements apply at the point of custody transfer. Withdrawal or loss of product from the vapour phase will change the composition of the product remaining in the liquid phase. Hence the product may cease to meet specified requirements. This standard does not cover gases for testing gas appliances, for which reference should be made to BS EN 437.
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