Chinese Standard: GB/T 31253-2014

Natural gas—Validation for gaseous reference materials—Direct measurement of calorific value and density

全国天然气标准化技术委员会(SAC/TC 244)

本标准规定了采用发热量和密度直接测量验证天然气分析用气体标准物质的方法。
本标准适用于称量法制备的气体标准物质的验证。

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