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GB/Z 38062-2019 Nanotechnologies—Determination of specific surface area of graphene materials—Methylene blue adsorption method (USD) via email in 1-3 business day TO BE VALID
JC/T 2132-2012 Determination of doped and trace elements in barium strontium titanate(BST)—Inductively coupled plasma atomic emission spectrometric method (USD) via email in 1-3 business day VALID
GB 10505.3-1989 Determination of static absorbed ethene and nitrogen for molecular sieve 3A (USD) via email in 1-3 business day ABOLISHED
GB/T 32263-2015 Highly purified compound—Reagent for pesticide residue analysis—Method of the gas chromatography with electron capture detector(ECD) (USD) via email in 1-3 business day VALID
GB/T 6283-2008 Chemical products—Determination of water Karl·fischer method(general method) via email in VALID please email coc@codeofchina.com for quotation
GB/T 31231-2014 Determination of zinc and lead isotopic ratios in aqueous solution—Multiple-collectors inductively coupled plasma mass spectrometry (USD) via email in 1-3 business day VALID
GB/T 32267-2015 Terminology of performance testing for analytical instrument (USD) via email in 1-8 business day VALID
GB 10504-1989 Molecular sieve 3A (USD) via email in 1-3 business day ABOLISHED
HG/T 2898-1997 Names for chemicals used in industry (USD) via email in 1-10 business day VALID
GB/T 9008-2007 Terms of liquid chromatography—Column chromatography and planar chromatography (USD) via email in 1-5 business day VALID
GB/Z 20288-2006 General disassembly requirements for testing hazardous substances in electrical and electronic products via email in 1-3 business day please email coc@codeofchina.com for quotation
GB/T 30053-2013 Determination of Benzene, toluene and xylene in crude benzene (USD) via email in 1-3 business day VALID
GB/T 23955-2009 General principle for naming of chemicals via email in VALID please email coc@codeofchina.com for quotation
GB/T 4946-2008 Terms of gas chromatography (USD) via email in 1-3 business day VALID
GB/T 7532-2008 Determination of heavy metals in organic chemical products - Visual colorimetry (USD) via email in 1-3 business day VALID
GB/T 5274-2008 Gas analysis - Preparation of calibration gas mixture - Gravimetric method (USD) via email in 1-5 business day ABOLISHED
GB/T 6324.4-2008 Test method of organic chemical products - Part 4: Determination of trace sulfur in organic liquid products - Microcoulometric method via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 12149-2017 Determination of silica in water for industrial circulating cooling system and boiler (USD) via email in 1-3 business day VALID
GB 10505.2-1989 Determination of abrasion for molecular sieve 3A (USD) via email in 1-3 business day ABOLISHED
GB/T 32264-2015 Method of performance testing for gas chromatography-single quadrupole mass pectrometry (USD) via email in 1-3 business day VALID
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