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ISO 759:1981 (R2016) Volatile organic liquids for industrial use — Determination of dry residue after evaporation on water bath — General method
ISO 6796:1981 (R2019) Polyglycols for industrial use — Determination of hydroxyl number — Phthalic anhydride esterification method
ISO 6796:1981 (R2019) Polyglycols for industrial use — Determination of hydroxyl number — Phthalic anhydride esterification method
ISO 4948-2:1981 (R2014) Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main quality classes and main property or application characteristics
ISO 3923-2:1981 (R2017) Metallic powders — Determination of apparent density — Part 2: Scott volumeter method
ISO 4948-2:1981 (R2014) Steels — Classification — Part 2: Classification of unalloyed and alloy steels according to main quality classes and main property or application characteristics
ISO 3923-2:1981 (R2017) Metallic powders — Determination of apparent density — Part 2: Scott volumeter method
ISO 1923:1981 (R2017) Cellular plastics and rubbers — Determination of linear dimensions
ISO 1923:1981 (R2017) Cellular plastics and rubbers — Determination of linear dimensions
ISO 787-4:1981 (R2019) General methods of test for pigments and extenders — Part 4: Determination of acidity or alkalinity of the aqueous extract
ISO 787-2:1981 (R2019) General methods of test for pigments and extenders — Part 2: Determination of matter volatile at 105 degrees C
ISO 787-2:1981 (R2019) General methods of test for pigments and extenders — Part 2: Determination of matter volatile at 105 degrees C