How to Test lower Karat Golds with only 14K Gold acid solution & to never use the 10K acid solution

[@DSM-114]

Thanks, I was using the 10k solution on a 10k and a 14k piece and couldn’t tell the difference

[@user-yo4yi5ip7q]

How to make this acid solution

[@TBBWDontPlayNoReindeerGames]

14K acid: 23.7 mL nitric acid, 5.9 mL distilled water, and 10 drops hydrochloric acid