Specifically designed for the quick and accurate measurement of fluoride ions in drinking water and other aqueous samples, the ExStik FL700 incorporates a sensing electrode, measuring electronics, and display in one convenient package, making this unit ideal for field or laboratory testing. The FL700 is capable of direct reading of total fluoride from 9.99 ppm or mg/L down to 0.1ppm, and the meter provides automatic temperature compensation (±10 degrees C of calibration temperature). Complete with electrode, TISAB reagent tablets, sensor cap, four 3V button batteries, and 48" (1.2m) neckstrap.