ISO 5968:1981 Circular screwing dies - Terminology standard by International Organization for Standardization, 09/01/1981
ISO 855:1981 [ Withdrawn ] Oil of lemon, Italy, obtained by expression standard by International Organization for Standardization, 09/01/1981
ISO 4733:1981 [ Withdrawn ] Oil of cardamom standard by International Organization for Standardization, 09/01/1981
ISO 787-9:1981 General methods of test for pigments and extenders - Part 9 : Determination of pH value of an aqueous suspension standard by International Organization for Standardization, 09/01/1981
ISO 787-4:1981 General methods of test for pigments and extenders - Part 4 : Determination of acidity or alkalinity of the aqueous extract standard by International Organization for Standardization, 09/01/1981
ISO 787-2:1981 General methods of test for pigments and extenders - Part 2 : Determination of matter volatile at 105 degrees C standard by International Organization for Standardization, 09/01/1981
ISO 1923:1981 Cellular plastics and rubbers - Determination of linear dimensions standard by International Organization for Standardization, 09/01/1981
ISO 5887:1981 [ Withdrawn ] Aircraft - Joints for connecting crew members regulator masks to oxygen sources' standard by International Organization for Standardization, 09/01/1981
ISO 6022:1981 Hydraulic fluid power -- Single rod cylinders -- Mounting dimensions -- 250 bar (25 000 kPa) series standard by International Organization for Standardization, 09/01/1981
ISO 759:1981 Volatile organic liquids for industrial use -- Determination of dry residue after evaporation on water bath -- General method standard by International Organization for Standardization, 09/01/1981
ISO 6796:1981 Polyglycols for industrial use -- Determination of hydroxyl number -- Phthalic anhydride esterification method standard by International Organization for Standardization, 09/01/1981
ISO 6779:1981 Acceptance conditions for broaching machines of vertical internal type - Testing of accuracy standard by International Organization for Standardization, 09/01/1981