The acid test is the traditional method of testing gold: if the gold is the same karat as or higher than the test acid, it will not react. If it does react, it is of a lesser karat than the test acid. The needles included in the test kits provide a standard for comparison. The acids are easily dispensed from plastic squeeze bottles
- Available in 10k, 14k, 18k, 22k, Silver and Platinum.
Metals that test for higher than 18K should be tested with 22K & Platinum acid!! If the streak remains on the test area above 22k, it is probably STAINLESS STEEL or Platinum. We also recommend you use a rare earth magnet when testing as some steel jewelry is magnetic.