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 29493.2-2013
Determination of harmful substances in textile dyeing and finishing auxiliaries - Part 2: Determination of perfluorooctane sulfonates and perfluorooctanoicacid HPLC-MS/MS method
GB/T 29493.1-2013
Determination of harmful substances in textile dyeing and finishing auxiliaries - Part 1: Determination of polybrominated biphenyl and polybrominated diphenyl ethers GC/MS method
GB/T 2290-2012
Coal tar pitch
GB/T 28894-2012
Surface chemical analysis - Handling of specimens prior to analysis
GB/T 28893-2012
Surface Chemical Analysis - Auger electron spectroscopy and X-ray photoelectron spectroscopy - Methods used to determine peak intensities and information required when reporting results
GB/T 28892-2012
Surface chemical analysis - X-ray photoelectron spectroscopy -Description of selected instrumental performance parameters
GB/T 28901-2012
Analysis of coke-oven gas composition by gas chromatography
GB/T 28729-2012
Nitrous oxide
GB/T 28724-2012
Determination of melting temperature for chemicals (pharmaceuticals) - Differential scanning calorimetry(DSC)
GB/T 28723-2012
Determination of purity for chemicals (pharmaceuticals) - Differential scanning calorimetry (DSC)
GB/T 28727-2012
Gas analysis - Determination of sulfides - Gas chromatograph with flame photometric detector
GB/T 28726-2012
Gas analysis - Gas chromatograph with helium ionization detector
GB/T 28722-2012
Determination of iron and lead in amino acids - Atomic absorption spectrometry
GB/T 28657-2012
Potassium dichromate for industrial use
GB/T 28656-2012
Calcium nitrite for industrial use
GB/T 28655-2012
Ammonium bifluoride for industrial use
GB/T 28654-2012
Trichlorosilane for industrial use
GB/T 28653-2012
Ammonium fluoride for industrial use
GB/T 28652-2012
High quality anhydrous potassium fluoride
GB/T 28712.6-2012
Type and basic parameters of heat exchanger - Part 6：air cooled heat exchanger