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ISO 11489:1995 Determination of platinum in platinum jewellery alloys -- Gravimetric determination by reduction with mercury(I) chloride
standard by International Organization for Standardization, 05/01/1995
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Specifies a gravimetric method for the determination of platinum in platinum jewellery alloys, preferably within the range of fineness stated in ISO 9202. The procedure applies specifically to platinum alloys incorporating palladium, iridium, rhodium, copper, cobalt, gold, ruthenium, gallium, chromium, indium and less than 5 % tungsten. Some modifications are indicated where palladium, iridium, rhodium, gold or ruthenium are present.