GB/T 8979-2008 Translated English of Chinese Standard. (GBT 8979-2008, GB/T8979-2008, GBT8979-2008): Pure nitrogen and high purity nitrogen and ultra pure nitrogen

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https://www.chinesestandard.net, 20 nov. 2014 - 7 sidor
This Standard specifies the technical requirements, test methods, as well as packaging, marking, storage, safety warning of pure nitrogen, high purity nitrogen and ultra pure nitrogen products. This Standard applies to gaseous or liquid pure nitrogen, high purity nitrogen and ultra-pure nitrogen obtained from air separation or purification. They are mainly used as the protective gas, replacement gas, reaction gas, etc. Molecular formula: N2. Relative molecular mass: 28.1034 (according to relative atomic mass in 2005).

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