6 Prong Gold & Silver mining prospecting Test Needles 8K 10K 12K 14K 18K 999S

Looking for a comprehensive set of test needles to accurately assess gold and silver karats? Look no further! Our exclusive collection features 6 different gold and silver karats represented, including 8K, 10K, 12K, 14K, 18K, and 999S. With our reliable test needles, you can confidently compare acid reactions with your precious metal items, ensuring accurate evaluations. Our user-friendly guidelines will teach you how to interpret the test results effectively, enabling you to determine the exact karat of the items being tested. Master this subjective gold testing method through practice and careful observation. Upgrade your gold and silver testing process today with our top-notch test needles and make precise assessments with ease! How to Use:  Choose the appropriate karat needle for accurate testing. Rub or scratch the karat needle against a test stone. Create a rubbing or scratch with the item to be tested next to the karat needle mark. Apply a drop of testing acid across bo