GB/T 23938-2021
高纯二氧化碳
High purity carbon dioxide
- 实施日期
- 2022-05-01
- 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 23938-2021
High purity carbon dioxide
GB/T 12519-2021
General specification of analytical instruments
GB/T 40870-2021
Gas analysis—Conversion of gas mixture composition data
GB/T 40568-2021
Nanotechnologies—Characterization of multiwall carbon nanotubes—Mesoscopic shape factors
GB/T 40674-2021
Fireworks and firecrackers—Evaluation method of environmental protection
GB/T 40640.5-2021
Informationalized management of chemicals—Part 5: Chemicals data center
GB/T 40640.4-2021
Informationalized management of chemicals—Part 4: General specification for chemicals positioning system
GB/T 40640.2-2021
Informationalized management of chemicals—Part 2: Information security
GB/T 40640.1-2021
Informationalized management of chemicals—Part 1: Data exchange
GB/T 40418-2021
Electronic specialty gas—Fluoromethane
GB/T 40417-2021
Electronic specialty gas—1,3-Hexafluorobutadiene
GB/T 40409-2021
Flame retardant chemical—Tetrabromophthalate diol
GB/T 40395-2021
Determination of ammonium in methanol for industrial use—Ion chromatography
GB/T 40394-2021
Determination of trace trimethylamine in methanol for industrial use—Gas chromatography-mass spectrometry
GB/T 40381-2021
Specification of sapphire plate for laser window
GB/T 40323-2021
Determination of octamethylcyclotetrasiloxane(D4), decamethylcyclopentasiloxane(D5) and dodecamethylcyclohexasiloxane(D6) in textile dyeing and finishing auxiliaries
GB/T 40300-2021
Microbeam analysis—Analytical electron microscopy—Vocabulary
GB/T 26520-2021
Calcium chloride for industrial use
GB/T 26519.3-2021
Persulfate for industrial use—Part 3:Ammonium persulfate for industrial use
GB/T 26519.2-2021
Persulfate for industrial use—Part 2:Potassium persulfate for industrial use