Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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DB23/T 1686-2016 via email in business day valid
DB23/T 1687-2016 via email in business day abolished
DB23/T 1688-2016 via email in business day abolished
GB/T 14235.1-2018 Low temperature pattern wax material for investment casting—Part 1:Testing methods for physical properties $315.00 immediately valid
GB/T 14235.2-2018 Low temperature pattern wax materials for investment casting—Part 2:Testing methods for usability properties $255.00 immediately valid
GB/T 1663-2001 Plasticizers--Determination of crystallizing point $104.00 via email in 1~3 business day valid
GB/T 18735-2014 Microbeam analysis-General guide for the specification of nanometer thin reference materials for analytical transmission electron microscope(AEM/EDS) $150.00 via email in 1~3 business day valid
GB/T 18907-2013 Microbeam analysis—Analytical electron microscopy—Selected-area electron diffraction analysis using a transmission electron microscope $450.00 via email in 1~3 business day valid
GB/T 19501-2013 Microbeam analysis—General guide for electron backscatter diffraction analysis $210.00 via email in 1~3 business day valid
GB/T 19502-2004 Surface chemical analysis - Glow discharge optical emission spectrometry (GD-OSE) - Introlduction to use $244.00 via email in 1~3 business day superseded
GB/T 23243-2009 Determination of perfluorooctane sulfonates (PFOS) in the food packaging material - High performance liquid chromatography-tandem mass spectrometry $120.00 via email in 1~3 business day abolished
GB/T 24169-2009 Determination of perfluorooctane sulfonates(PFOS)in the fluorine-containing products and consumer products—High performance liquid chromatography-tandem mass spectrometry $90.00 immediately valid
GB/T 24369.1-2009 Characterization of gold nanorods—Part 1:UV-Vis-NIR absorption spectroscopy $240.00 via email in 1~3 business day valid
GB/T 24370-2009 Characterization of CdSe quantum dot nanocrystals - UV - Vis absorption spectroscopy $210.00 via email in 1~3 business day superseded
GB/T 24370-2021 Nanotechnologies—Characterization of cadmium chalcogenide colloidal quantum dot—UV-Vis absorption spectroscopy $315.00 via email in 1~5 business day valid
GB/T 28606-2012 Determination of perfluorooctanoic acid and salt in the coating—High performance liquid chromatography-tandem mass spectrometry $140.00 via email in 1~3 business day valid
GB/T 28722-2012 Determination of iron and lead in amino acids - Atomic absorption spectrometry $150.00 via email in 1~3 business day valid
GB/T 30703-2014 Microbeam analysis―Guidelines for orientation measurement using electron backscatter diffraction $610.00 via email in 1~5 business day valid
GB/T 30705-2014 Microbeam analysis―Electron probe microanalysis―Guidelines for the determination of experimental parameters for wavelength dispersive spectroscopy $250.00 via email in 1~3 business day valid
GB/T 31744-2015 Test on the elementary properties of bamboo charcoal for water-purification $150.00 via email in 1~3 business day valid
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