Watch Jewelry Repair Precious Metals Purity Testing Kit w/ Electronic Scale PuriTEST Acid Bottles Stones Enables you to test & weigh scrap pieces & other samples at home or on-the-go when buying/selling Complete PuriTEST pack contains six (6) half-ounce bottles of test acids- 10k, 14k, 18k, 22k, Silver, and Platinum solutions DigiWeigh DW100AS electronic jewelry scale with batteries, calibration weight, and Lifetime Warranty Includes two test stones (one standard size, one extra large sized) safe testing surfaces Very easy-to-use; ideal for professionals and hobbyists