Check the listing for details. HM Digital Waterproof pH Meter, PH-200. Condition: New. Listed at 79.99 USD. Ideal for all pH testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment, wine, coffee, agriculture and more.FEATURESMeasures pH and TemperatureAuto-ranging three point calibration with digital fine tuningIncludes storage solution in a sponge embedded in a clear capWaterproof housing (IP-67 rating)Simultaneous temperature displayMeasurement Range: 0-14 pHDigital automatic calibration (one point), with digital fine tuningAutomatic Temperature Compensation (ATC)Auto-off function, data-hold function and low-battery indicatorDisplay: large and easy-to-read LCD screen includes simultaneous temperature readingReplaceable Sensor (model SP-P2)Factory Calibrated : The PH-200 meter is three-point checked and factory calibrated to pH 7.0. It can be re-calibrated to any point in its range with digital calibration using the push buttons.Includes a cap, batteries, lanyard, and pH 7.0 buffer SPECIFICATIONSpH Range: 0 - 14 Temperature Range: 0-55 °C; 32-130 °F Resolution: 0.01 pH; Temperature resolution is 0.1 °C/F Accuracy: +/- 0.1 pH; Temperature accuracy is +/-2% Calibration: Digital automatic calibration (one point) with digital fine tuning Minimum EC/TDS: 5 uS/10 ppm Electrode: Replaceable glass sensor and reference tube electrodes Housing: IP-67 Waterproof (submersible; floats) Power source: 3 x 1.5V button cell batteries (LR44 or equivalent; included) Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) Weight: 96.4 g (3.4 oz) UPC: 891144000021