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DIN ISO 5249:1991-08 Textile machinery and accessories; guide rollers for dyeing and finishing machines; main dimensions; identical with ISO 5249:1988
DIN ISO 9119:1991-08 Cross-country skis; binding mounting area; requirements and test methods; identical with ISO 9119:1990
DIN ISO 3878:1991-07 Hardmetals; Vickers hardness test; identical with ISO 3878:1983
DIN ISO 4489:1991-07 Sintered hardmetals; sampling and testing; identical with ISO 4489:1978
DIN ISO 4503:1991-07 Hardmetals; determination of contents of metallic elements by x-ray fluorescence; fusion method; identical with ISO 4503:1978
DIN ISO 7627-1:1991-07 Hardmetals; chemical analysis by flame atomic absorption spectrometry; general requirements; identical with ISO 7627-1:1983
DIN ISO 7627-2:1991-07 Hardmetals; chemical analysis by flame atomic absorption spectrometry; determination of calcium, potassium, magnesium and sodium in contents from 0,001 to 0,02 % (m/m); identical with ISO 7627-2:1983
DIN ISO 7627-3:1991-07 Hardmetals; chemical analysis by flame atomic absorption spectrometry; determination of cobalt, iron, manganese and nickel in contents from 0,01 to 0,5 % (m/m); identical with ISO 7627-3:1983
DIN ISO 7627-4:1991-07 Hardmetals; chemical analysis by flame atomic absorption spectrometry; determination of molybdenum, titanium and vanadium in contents from 0,01 to 0,5 % (m/m); identical with ISO 7627-4:1983
DIN ISO 7627-6:1991-07 Hardmetals; chemical analysis by flame atomic absorption spectrometry; determination of chronium in contents from 0,01 to 2 % (m/m); identical with ISO 7627-6:1985
DIN ISO 3696:1991-06 Water for analytical laboratory use; specification and test methods; identical with ISO 3696:1987
DIN ISO 4883:1991-06 Hardmetals; determination of contents of metallic elements by X-ray fluorescence; solution method; identical with ISO 4883:1978