Easily test the purity of silver with ToolTreaux’s Silver Testing Kit. The kit includes two, 0.5 ounce (oz) bottles and one testing stone. The testing solutions are potent, effective and will see you through hundreds of tests. A must-have tool for gold panning, jewelry appraisal or other professions that work with silver, coins and other precious metals. And, housed in small, sturdy, shatterproof plastic squeeze bottles, the silver testing solution bottles are comfortable to maneuver, while also easily maintaining control over the amount of solution escaping the bottle. SILVER TESTING KIT METHOD: This silver testing method is best used on silver that is yet to be smelted, due to the harsh nature of the solution that could potentially damage an already finished item; if testing fine jewelry, sterling silver items or other finished items, be sure to choose an inconspicuous spot so as not to compromise the finished piece HOW THE SILVER TESTING KIT WORKS: To test silver purity, scratch the item onto the test stone leaving a visible deposit, then place a small drop of the solution over top of deposit; the purity of the silver is approximated according to the color the solution turns when it is applied to the sample; if the solution turns bright red that indicates high quality silver; if the solution turns blue or green the sample may contain brass or copper; if the sample deposit dissolves quickly, or the solution turns a dark brown or yellow, it is likely a base metal or silver platedNOTE: Keep out of reach of children; Exercise extreme caution when opening and using; Proper protective gloves and eyewear are highly recommended; Instruction pamphlet included. SPECIFICATIONS: Testing Stone Dimensions: 2 x 1.5 x 0.25 inches; Stone Weight: 0.01lbs; Bottle Dimensions: 3 x 1 x 1 inches; Bottle Weight: 0.04lbs; Bottle Material: Plastic; Solution Capacity: 0.5 ounces; Solution made in USA. HOW THE SILVER TESTING KIT WORKS: To test silver purity, scratch the item on to test stone leaving visible deposit, then place a small drop of the over deposit; the purity of the silver is approximated depending on the color the solution turns when applied to deposit; if solution turns red that indicates high quality silver; if solution turns blue or green the sample may contain brass or copper; if sample deposit dissolves, or solution turns a dark brown, it may be a base metal. SILVER TESTING KIT METHOD: This silver testing method is best used on silver that is yet to be smelted, due to the harsh nature of the solution that could potentially damage an already finished item; if testing fine jewelry, sterling silver items or other finished items, be sure to choose an inconspicuous spot so as not to compromise the finished piece. SILVER TESTING KIT: Easily test the purity of silver with ToolTreaux’s Silver Testing Solution Kit with Testing Stone! The kit includes two, 0.5oz shatterproof plastic squeeze bottles and one testing stone; the testing solutions are potent, effective and will see you through hundreds of future tests!.Date First Available: April 24, 2023. Country of Origin: China. Manufacturer: ToolTreaux. Item Weight: 3.04 ounces. Best Sellers Rank: #36,071 in Arts, Crafts & Sewing. Customer Reviews: 4.1 4.1 out of 5 stars 26 ratings 4.1 out of 5 stars. : B09GTD7M8Z. Item model number: 7J4927DHK. Product Dimensions: 3 x 1.5 x 1 inches.