GB/T 27801-2011 Vinylene carbonate

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 3143-1982 Color determination method of liquid chemicals (Hazen unit—platinum-cobalt scale) GB/T 3723-1999 Sampling of chemical products for industrial use—Safety in sampling GB/T 6678-2003 General principles for sampling chemical products 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 8170-1987 Rules for rounding off of numberical values GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgement of limiting values GB/T 9722-2006 Chemical reagent—General rules for the gas chromatography GB/T 9723-2007 Chemical reagent—General rule for flame atomic absorption spectrometric analysis GB/T 9728-1988 Chemical reagent General method for the determination of sulphate GB/T 9728-2007 Chemical reagent—General method for the determination of sulphate GB/T 9722-2023 Chemical reagent—General rules for the gas chromatography GB/T 602-2026 Chemical reagent—Preparations of standard solutions for impurity