Federal, state, and local health regulations require the use of Test kits to verify the strength of sanitizer solutions. Hydration Test strips are a quick, reliable, and economical solution for this. Test strips are available to Test quaternary ammonium, chlorine, and iodine-based sanitizers. Strips provide a visual color-change indication of solution strength. Each 15-ft (4.6-M) roll comes with a color match Chart and is clearly labeled. Each roll provides enough paper for about 100 tests. Convenient dispenser roll lets you use the exact strip Length needed reliable and economical means to measure sanitizer strength.