CATEGORIES

    GB/T 23711.1-2019《Test method for pressure vessels lined with plastics—Part 1:Spark testing》

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    GB/T 7991.7-2019《Test method of viterous and porcelain enamels—Part 7：Determination of coefficient of mean lincar thermal expansion》

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    GB/T 7991.4-2019《Test method of viterous and porcelain enamels—Part 4：Determination of resistance to impact》

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    GB/T 38722-2020《Surface active agents—Determination of interfacial tension—Drawing up liquid films》

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    GB/T 39689-2020《Surface active agents—Determination of free formaldehyde》

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    GB/T 26824-2020《Nanoscale alumina》

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    GB/T 39630-2020《Colloidal solution of silver nanoparticles》

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    GB/T 6287-2021《Determination of static adsorbed water for molecular sieve》

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    GB/T 6286-2021《Determination of bulk density for molecular sieve》

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    GB/T 6288-2021《Determination of particle size for granular molecular sieve》

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    GB/T 611-2021《Chemical reagent—General method for the determination of density》

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    GB/T 614-2021《Chemical reagent—General method for the determination of refractive index》

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    GB/T 39560.702-2021《Determination of certain substances in electrical and electronic products—Part 7-2:Hexavalent chrome—Determination of hexavalent chrome[Cr(VI)]in polymers and electronics by the colormetric method》

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    GB/T 40789-2021《Gas analysis—Online automated measuring systems for content of carbon monoxide , carbon dioxide and oxygen—Determination of performance characteristics》

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    GB/T 7991.3-2021《Test method of viterous and porcelain enamels—Part 3：Determination of resistance to thermal shock》

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    GB/T 24370-2021《Nanotechnologies—Characterization of cadmium chalcogenide colloidal quantum dot—UV-Vis absorption spectroscopy》

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    GB/T 41330-2022《Analysis of water used in boiler and cooling system—Determination of trace copper, iron, sodium, calcium and magnesium—Inductively coupled plasma mass spectrometry (ICP-MS)》

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    GB/T 6609.30-2022《Chemical analysis methods and determination of physical performance of alumina—Part 30: Determination of trace elements—Wavelength dispersive X-ray fluorescence spectrometric method》

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    GB/T 42027-2022《Gas-phase molecular absorption spectrometer》

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    GB/T 42415-2023《Surface active agents—Determination of static interfacial tension》

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    GB/T 6609.25-2023《Chemical analysis methods and determination of physical performance of alumina—Part 25: Method for the determination of tapped and untapped density》

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    GB/T 6609.27-2023《Chemical analysis methods and determination of physical performance of alumina—Part 27: Particle size analysis—Sieves method》

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    GB/T 6609.35-2023《Chemical analysis methods and determination of physical performance of alumina—Part 35: Determination of specific surface area—Nitrogen adsorption method》

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    GB/T 42674-2023《Optical functional films—Measurement method for microstructure thickness》

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    GB/T 42921-2023《Optical functional films—Polyethylene terephthalate (PET) film—The adhesive force measurement of protective film》

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    GB/T 43306-2023《Gas analysis—Sampling guidelines》

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    GB/T 43098.2-2023《Analysis of water treatment chemicals—Part 2: Determination of arsenic, mercury, cadmium, chromium, lead, nickel and copper—Inductively coupled plasma mass spectrometry(ICP-MS)》

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    GB/T 13465.10-2024《Test method of impermeable graphite materials—Part 10: Tensile strength》

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    GB/T 45133-2025《Gas analysis—The determination of the composition of gas mixtures—Comparison methods based on one-and two-point calibration》

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    GB/T 25273-2025《Films for liquid crystal display（LCD）—Method for measuring haze and light transmittance—Integrating sphere method》

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