Single 5ml Bottle contains enough acid for dozens of tests and Black Scratch Stone. Do not touch to solution with bear hand, use wipes, towel, or cloth to wipe it.
Silver Tester Silver Testing Solution Acid with Scratch Stone
Single 0.5 Ounce Bottle contains enough acid for hundreds of tests and Black Scratch Stone. Do not touch to solution with bear hand, use wipes, towel, or cloth to wipe it.