These are refills for the Deluxe AquaChek GOLD (now called Select) Test Strips Kits

Quickest and easiest way to test pool or spa water for Chlorine, PH, Calcium Hardness and Alkalinity. New formula makes these Test Strips highly accurate. Simply dip strip into water, then compare colors on strip to those on the bottle. It's that easy ! Say goodbye to those messy dropper bottles forever !