GB/T 5275.7-2025
气体分析 动态法制备校准用混合气体 第7部分:热式质量流量控制器
Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 7:Thermal mass-flow controllers
- 实施日期
- 2026-05-01
- ICS 分类
- 71.100.20
组合使用关键词、标准类型、状态与 ICS 分类,快速定位所需国家标准。
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GB/T 5275.7-2025
Gas analysis—Preparation of calibration gas mixtures using dynamic methods—Part 7:Thermal mass-flow controllers
GB/T 21883-2025
Fluorescent whitening agents—Determination of UV-absorption and fluoristrength
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Disperse dyestuffs—Determination of relative strength—Spectrophotometer method
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Determination of application solubility and solution stability of water-soluble dyes
GB/T 46301-2025
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Electronic gas—Noble gas
GB/T 17873-2025
Pure neon ,high purity neon and ultra pure neon
GB/T 5828-2025
Pure xenon,high purity xenon and ultra pure xenon
GB/T 28125.1-2025
Gas analysis—Determination of the contents of hazardous materials in air separation process—Part 1: Determination of contents of methane,acetylene,carbon dioxide and hydrocarbons
GB/T 28124-2025
Gas analysis—Determination of the trace contents of hydrogen,oxygen,methane and carbon monoxide in inert gases—Gas chromatography with zirconia detector
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Gas analysis—Purity analysis and the treatment of purity data
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Gas analysis—Determination of the contents of trace carbon monoxide, carbon dioxide and hydrocarbon in gases—Gas chromatography with flame ionization detector
GB/T 14599-2025
Pure oxygen,high purity oxygen and ultra pure oxygen
GB/T 8979-2025
Pure nitrogen,high purity nitrogen and ultra pure nitrogen
GB/T 5829-2025
Pure krypton,high purity krypton and ultra pure krypton
GB/T 28727-2025
Gas analysis—Determination of the contents of trace sulfur compounds in gases—Gas chromatography with flame photometric detector
GB/T 46258-2025
Determination of hexamethylenetetramine in cosmetics—Liquid chromatography–tandem mass spectrometry
GB/T 12022-2025
Industrial sulphur hexafluoride
GB/T 46122.9-2025
Fireworks—Test methods for determination of specific chemical substances—Part 9:Determination of mercury content—Hydride generation atomic fluorescence spectrometry