The ColorQ PRO 9-PLUS handheld pool and spa photometer directly measures nine tests directly on a digital display. The meter is easy to use and features economical liquid reagents that measure 288 tests per 60 mL size bottle for Free Chlorine (DPD), Total Chlorine (DPD), Bromine (DPD), pH, Alkalinity and Calcium Hardness. The Cyanuric Acid, Copper and Iron tests are measured by using one instrument grade TesTabs® tablet per test with 100 tablets included for each factor with the kit. As a bonus, the ColorQ PRO 9-PLUS photometer can also measure Biguanide and Biguanide Shock with optional reagents sold separately.