Description

The object is rubbed on a touchstone and the trace is evaluated with the corresponding test solution. The kit combines gold acids for 8, 14, 18 and 21 carat with platinum solution and a chromate-free silver test system.

Best for

Bench testing of gold, silver and platinum by trained users

Measurement method

Metallurgical touchstone assay with chemical test solutions

Important limitation

Chemical tests require protective handling, correct storage, surface abrasion and trained interpretation. Transport may be restricted by hazardous-goods rules.