GB/T 30296-2013 Perfluorinated ion-exchange membrane for chlor-alkali industry—Test method

GB/T 8144-2008 Determination of exchange capacity of cation exchange resin SJ/T 10171.5 GB/T 454-2002 Paper—Determination of bursting strength GB/T 454-2020 Paper—Determination of bursting strength GB/T 457-2002 Paper—Determination of folding endurance (Schopper method) GB/T 457-2008 Paper and board—Determination of folding endurance 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 1040.3-2006 Plastics—Determination of tensile properties—Part 3:Test conditions for films and sheets GB/T 6672-2001 Plastics film and sheeting—Determination of thickness by mechanical scanning GB/T 6673-2001 Determination of length and width of plastics film and sheeting 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 16578.2-2009 Plastics—Film and sheeting—Determination of tear resistance—Part 2:Elmendorf method GB/T 20220-2006 Plastics—Film and sheeting—Determination of average thickness of a sample, and average thickness and yield of a roll, by gravimetric techniques(gravimetric thickness)