7 Piece Gold Testing Acid Jewelry Test Kit w/ Scratch Stone  10k, 14k ,18k ,22K, Platinum, Silver, and Scratch Testing Stone  Fresh from the Factory This Comes with a large testing stone 2" x 1.5"   Each bottle has 1/2 fl oz of acid. The sturdy plastic bottles maximize safety and allow the user to easily squeeze out one drop at a time. All bottles have different cap colors to help keep acid karats organized easier   Latex Gloves are recommended with the use of any testing acids for safety You will receive:  1 bottle of 10k testing acid  1 bottle of 14k testing acid  1 bottle of 18k testing acid  1 bottle of silver testing solution  1 bottle of platinum testing solution  1 bottle of 22k testing solution  1 Scratch Testing Stone 2" x 1.5"