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The ColorQ TesTabs Copper 7 handheld pool and spa photometer directly measures seven tests that includes Copper, Free Chlorine (DPD), Total Chlorine (DPD), Bromine (DPD), pH, Alkalinity and Calcium Hardness. The photometer is easy to use and includes 100 instrument grade TesTabsĀ® tablet reagents per test factor packaged in blister-style foil.