Test methods of plastics, catalog, Chinese national standards
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GB/T 4612 Plastics - Epoxy compounds - Determination of epoxy equivalent
GB/T 4618.1 Plastics - Epoxy resins - Determination of chlorine content - Part 1: Inorganic chlorine
GB/T 4618.2 Plastics - Epoxy resins - Determination of chlorine content - Part 2: Easily saponifiable chlorine
GB/T 6743 Plastics(polyester resins) and paints and varnishes(binders) - Determination of partial acid value and total acid value
GB/T 12006.1 Plastics - Polyamides - Part 1: Determination of viscosity number
GB/T 12006.2 Plastics - Polyamides - Part 2: Determination of water content
GB/T 12010.2 Plastic - Poly(vinyl alcohol)(PVAL)materials - Part 2: Determination of properties
GB/T 12010.4 Plastic - Poly(vinyl alcohol)(PVAL) materials - Part 4: Determination for pH value
GB/T 12010.5 Plastic - polyvinyl alcohol (PVAL) materials - Part 5: Determination for average polymerization degree
GB/T 12010.6 Plastic - polyvinyl alcohol (PVAL) materials - Part 6: Determination for particle size
GB/T 12010.7 Plastics - polyvinyl alcohol (PVAL) materials - Part 7: Determination for sodium hydroxide contents
GB/T 12010.8 Plastic - polyvinyl alcohol (PVAL) materials - Part 8: Determination for transparency
GB/T 15223 Plastics - Liquid resins - Determination of density by the pyknometer method
GB/T 22314 Plastics - Epoxide resins - Determination of viscosity
GB/T 24127 Testing method for determining algal resistance of plastics
GB/T 24128 Method for testing resistance of plastics to mold
GB/T 25276 Triacetyl cellulose (TAC) films for liquid crystal display（LCD）- Determination of thickness
GB/T 25277 Plastics - Determination of phenolic antioxidants and erucamide slip additives in polypropylene homopolymer formulations - liquid chromatography (LC)
GB/T 28122 Polyvinyl alcohol (PVA) films for liquid crystal display (LCD)-Determination of thickness
GB/T 29616 Thermoplastic elastomer - Determination of polycyclic aromatic hydrocarbons - Gas chromatography-mass spectrometry
GB/T 29649 Determining the biobased content of biobased materials - Liquid scintillation counters (LSC) method
GB/T 33315 Plastics - Phenolic resins - Determination of the gel time
GB/T 33316 Plastics - Phenolic resins - Determination of reactivity on a B-transformation test plate
GB/T 33317 Plastics - Phenolic resins - Determination of hexamethylenetetramine content - Kjeldahl method, perchloric acid method and hydrochloric acid method
GB/T 33323 Plastics - Liquid phenolic resins - Determination of water miscibility
GB/T 33388 Plastics - Determination of phenolic resin compositions - Liquid chromatography