Determination of platinum in platinum jewellery alloys. Gravimetric method after reduction with mercury(I) chloride Ingestion-build-276583 Determination by means of two-point

Determination by means of two-point measurement (measurement of diameters)

The emphasis is on providing conditions for the materials and structures of collection items that will help prevent rapid deterioration or irreversible damage

masses ae well as tolerances of form and position

BS 7562-2 identifies basic site data which need to be acquired and analysed to enable the designer

Determination of platinum in platinum jewellery alloys. Gravimetric method after reduction with mercury(I) chloride Ingestion-build-276583 Determination by means of two-point1 Scope This International Standard 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