This standard BS EN 1904:2000 Precious metals. The finenesses of solders used with precious metal jewellery alloys is classified in these ICS categories:
39.060 Jewellery
This European Standard specifies the precious metal content in solders suitable for use in the production of jewellery made of precious metal alloys. The UK has been granted an A-deviation from EN 1904 as a number of requirements conflict with those of the Hallmarking Act 1973.
