Product

GB/T 44238-2024 《Hydrogen for proton exchange membrane fuel cell vehicles—Determination of helium, argon, nitrogen and total hydrocarbons—Gas chromatography method》

GB/T 44215-2024 《Glassware一Test method for inner surface hot end spraying liquid》

GB/T 2394-2024 《Disperse dyestuffs—Determination of shade and relative strength》

GB/T 23850-2024 《Sodium perchlorate for industrial use》

GB/T 23950-2024 《General methods for the determination of heavy metals in inorganic chemical products》

GB/T 44242-2024 《Hydrogen for proton exchange membrane fuel cell vehicles—Determination of inorganic halogenated compounds and formic acid—Ion chromatography method》

GB/T 44262-2024 《Technical requirements for sampling of hydrogen for proton exchange membrane fuel cell vehicles》

GB/T 44244-2024 《Hydrogen for proton exchange membrane fuel cell vehicles—Determination of carbon monoxide and carbon dioxide—Gas chromatography method》

GB/T 2092-2024 《Sebacic acid for industrial use》

GB/T 44161-2024 《Disperse dyestuffs—Determination of thermal migration》

GB/T 39077-2024 《Test methods for detecting detrimental phase in austenitic-ferritic (duplex) stainless steels》

GB/T 44184-2024 《Stability tests for nitrocellulose mixtures》

GB/T 44223-2024 《Nanotechnologies—Technical requirements for dynamic light scattering particle size analyzers》

GB/T 44205-2024 《Sample preparation of ancient lacquer film for microscopy》

GB/T 23587-2024 《General rules for starch product》

GB/T 8884-2017 《Edible potato starch》

GB 3836.16-2024 《Explosive atmospheres—Part 16: Specification of electrical installations inspection and maintenance》

GB 30000.1-2024 《Specification for classification and labelling of chemicals—Part 1：General rules》

SY/T 6858.5-2016 《Nondestructive testing method for OCTG.Part 5: Ultrasonic thickness measurement》

SH/T 1770-2010 《Plastics.Determination of water content for polyethylene》

HG/T 6108-2022 《Determination of chlorine ion content in waste sulphuric acid》

HG/T 2957.5-2004 《Determination of Aluminum Content in Alunite Ore by Volumetric Method》

HG/T 2957.9-2004 《Determination of Silicon Content in Alunite Ore by Gravimetric Method》

SN/T 5350.2-2021 《Determination of arsenic in sulfur- A tomic fl uorescence spectrometer method》

SL/T 788.4-2019 《Water quality- -Determination of anionic surfactants》

SL/T 788.3-2019 《Water quality. Determination of total nitrogen, volatile phenolic compounds, sulfide; anionic surfactants and chromium(VI) by continuous flow analysis spectrophotometry. Water quality. Determination of sulfide》

SL/T 788.5-2019 《Water quality. Determination of total nitrogen, volatile phenolic compounds, sulfide; anionic surfactants and chromium(VI) by continuous flow analysis spectrophotometry. Water quality. Determination of chromium(VI)》

SL/T 788-2019 《Water quality. Determination of total nitrogen, volatile phenolic compounds, sulfide, anionic surfactants and chromium (VI) by continuous flow analysis spectrophotometry》

HJ 668-2013 《Water quality.Determination of total nitrogen by flow injection analysis (FIA) and N-(1-naphthyl)ethylene diamine dihydrochloride spectrophotometry》

SL/T 788.1-2019 《Water quality. Determination of total nitrogen, volatile phenolic compounds, sulfide; anionic surfactants and chromium(VI) by continuous flow analysis spectrophotometry. Water quality. Determination of total nitrogen》