GB/T 15895-1995 Chemical reagent—1,2-Dichloroethane

GB/T 15895-2021 Chemical reagent—1,2-Dichloroethane

GB/T 619 HG 3-119 GB/T 601-2002 Chemical reagent Preparations of standard volumetric solutions GB/T 601-2016 Chemical reagent—Preparations of reference titration solutions GB/T 602-2002 Chemical reagent—Preparations of standard solutions for impurity 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 605-1988 Chemical reagent—General method for the measurement of colour(in Hazen units) GB/T 605-2006 Chemical reagent—General method for the measurement of colour GB/T 606-2003 Chemical reagent—General method for the determination of water—Karl Fischer method GB/T 616-1988 Chemical reagent General method for the determination of boiling point GB/T 616-2006 Chemical reagent—General method for the determination of boiling point 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/T 9722-2006 Chemical reagent—General rules for the gas chromatography GB/T 9737-2008 Chemical reagent—General rules for the determination of readily carbonizable substances GB/T 9740-1988 Chemical reagent General method for the determination of dry residue after evaporation GB/T 9740-2008 Chemical reagent—General method for the determination of dry residue after evaporation GB/T 9722-2023 Chemical reagent—General rules for the gas chromatography GB/T 602-2026 Chemical reagent—Preparations of standard solutions for impurity