GB/T 40409-2021 Flame retardant chemical—Tetrabromophthalate diol

GB/T 12008.3-2009 Plastics—Polyether polyols—Part 3:Determination of hydroxyl number GB/T 12008.7-2010 Plastics—Polyether polyols—Part 7:Determination of viscosity GB/T 22313-2008 Plastics—Polyols for use in the production of polyurethan—Determination of water content GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods 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 611-1988 Chemical reagent—General method for the determination of density GB/T 611-2006 Chemical reagent—General method for the determination of density GB/T 611-2021 Chemical reagent—General method for the determination of density GB/T 6678-2003 General principles for sampling chemical products GB/T 6680-2003 General rules for sampling liquid 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 12008.5-1989 Polyether polyols—Determination of acid number GB/T 12008.5-2010 Plastics—Polyether polyols—Part 5:Determination of acidity as acid number GB/T 191-2025 Graphical symbols marking for handling and storage of packages