Six Pack Restaurant Sanitizer Chlorine Test Paper, 10-200 ppm [6 Vials of 100 Paper Strips]Features Perfect for testing chlorine bleach sanitizers and avoiding hefty board of health fines! One pocket sized, splash proof, lightweight vial protecting instructions and color chart with 100 pre cut strips Industry leading rapid one second test Tests in a range of 10 200 ppm (10, 50, 100 and 200 ppm markings) These are NOT for pool OR tap water tests. They ARE designed specifically for restaurants testing their chlorine sanitizers in 3 part sinks