The Waterproof Bluetooth ColorQ 2x PRO 7 handheld pool and spa professional photometer directly measures all of your pools chemical levels directly on a digital display. The handheld meter is easy to use and features economical liquid reagents that measure 144 tests per test factor for chemicals. Chemicals are measured by using the TesTabs tablet method and includes 100 tablets for each test. The ColorQ 2x eliminates the need to visually determine slight color variations, thus taking the guesswork out of poolside water analysis. The photometer, testing reagents and photo-diagrammatic trilingual instructions (English, Spanish, French) are packaged in a convenient carrying case for on-site testing.