EX900 - ExStik® 4-in-1 Chlorine, pH, ORP and Temperature KitApplicationsSurface measurements of Chlorine, pH, or ORPFeatures• 4-in-1 Water Quality Meter measures Chlorine, pH, ORP plus Temperature with interchangeable flat surface electrodes (included)• Flat surface electrodes work in liquids, semi-solids and solids• Memory stores and recalls 15 readings and saves last calibrated value• Large 3-1/2 digit (2000 count) Digital display with bargraph (pH bargraph originates at neutral point 7.00pH)• Automatic electronic self calibration for Chlorine and ORP; 1, 2 or 3 point buffer calibration for pH• Data Hold, Auto shut-off and low battery indication• Waterproof design floats in wet environment (IP57)• Direct reading of Total Chlorine from low detection limit; Unaffected by sample color or turbidity• Simultaneous display of ppm or pH and °C/°F Temperature• Smart chip predicts pH electrode performance with "RENEW" indicator when replacement is needed• "CAL" indicator alerts user to recalibrate pH electrode• Automatic Temperature Compensation• EX900 Kit Complete with ExStik® Chlorine meter, gel filled pH electrode, ORP electrode, protective sensor cap, 5 packs of 10 reagent tablets (50 tests), 4 plastic sample cups, weighted stand, pH 4, 7 & 10buffer packs, four 3V SR44W batteries, carrying case, and neckstrap• EX900-R Kit is same as EX900 but includes a refillable pH electrode• EX800 Kit is same as EX900 but excludes ORP electrode