Check the listing for details. HM Digital PH Meter PH-80. Condition: New. Listed at 39.99 USD. PH-80: pH HydroTester SeriesThe PH-80 has proven to be the MOST reliable pH meter in its price range. It has become a favorite in such applications as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more.FEATURES:Measures pH and TemperatureOne-touch automatic digital calibrationWater resistantSimultaneous temperature displayLarge LCD displayAutomatic Temperature Compensation (ATC)Auto-off function, data-hold function and low-battery indicatorFactory Calibrated: The PH-80 meter is factory calibration to pH 7.0.Includes a translucent cap, batteries, storage solution and pH 7.0 buffer (powder)PRODUCT DESCRIPTIONpH Range: 0 – 14Temperature Range: 1-55 °C; 32-130 °FResolution: 0.1 pH; Temperature resolution is 0.1 °C/FAccuracy: +/- 0.2 pH; Temperature accuracy is +/-2%Calibration: Digital automatic calibration (one point)Minimum EC/TDS: 10 µS/5 ppmElectrode: Glass sensor and reference tube electrodesPower source: 3 x 1.5V button cell batteries (model LR44 or equivalent; included)Dimensions: 15.3 x 3.2 x 1.8 cm (6.0 x 1.3 x 0.7 inches)Weight: 53.9 g (1.9 oz)UPC: 891144000175