Small, flat and extremely fine stone for authentication of precious metals such as gold, silver and platinum in jewellery by acid test or acid scratch test. Due to the uniform dark colour, even the smallest traces of material can be detected.
The required chemicals are not included in the scope of delivery.
Product safety information
Manufacturer information:
Ernst Westphal e.K.
Vinzenzweg 5a
Hamburg
info@ernst-westphal.de
Responsible person:
Ernst Westphal e.K.
Vinzenzweg 5a
Hamburg
Hamburg, Deutschland, 21077
info@ernst-westphal.de
https://www.watchparts24.de/
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