TS EN ISO 11210

TS EN ISO 11210 is the standard that defines a gravimetric method for determining platinum in platinum jewellery alloys. Its focus is not generic precious-metal analysis, but the measurement of platinum in a platinum-based jewellery matrix, where the alloy composition can affect the analytical behaviour. The method title points to the precipitation of diammonium hexachloroplatinate, indicating a classical wet-chemical route in which platinum is converted into a weighable compound and quantified from mass measurements.

What gravimetric determination means in practice

Gravimetric analysis is a classical analytical approach built on precipitation, separation, drying and weighing of a defined compound. In the context of platinum determination, the analyte is brought into a specific precipitated form, and the platinum content is then calculated from the measured mass of that precipitate. Such methods are valued in analytical chemistry because they are direct, conceptually transparent and often used as reference or confirmation procedures rather than as rapid screening tools. The result depends on the measured mass of a chemically defined species, not on an instrument signal alone.

Scope and practical context

• The standard applies to platinum in platinum jewellery alloys.
• It is specifically a gravimetric determination method.
• The precipitation of diammonium hexachloroplatinate is part of the method identity.
• It is relevant to composition control and analytical verification in jewellery alloy work.