GB/T 33090-2016 Chemical reagent—N-(1-naphthyl) ethylenediamine dihydrochloride

GB/T 9725-2007 Chemical reagent—General rule for potentiometric titration GB/T 9741-2008 Chemical reagent—General method for the determination of residue after ignition GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions GB/T 603-2002 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 603-2023 Chemical reagent—Preparations of reagent solutions for use in test methods GB/T 606-2003 Chemical reagent—General method for the determination of water—Karl Fischer method GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB 15258-1999 General rules for preparation of precautionary label for industrial chemicals GB 15258-2009 General rules for preparation of precautionary label for chemicals GB 15346-1994 Chemical reagent—Packaging and marking GB 15346-2012 Chemical reagent—Packaging and marking HG/T 3921-2006 Chemical reagents sampling and acceptance rules