Check the listing for details. HM Digital PH-80 pH/Temp Meter + COM-80 EC/TDS/Temp Hydro Tester BUNDLE PACK. Condition: New. Listed at 79.99 USD. PH-80PH-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) COM-80COM-80: EC/TDS HydroTester SeriesThe COM-80 is easily the most advanced economically priced, reliable EC/TDS meter on the market. With its versatility and durability, it is ideal for testing applications such as hydroponics & gardening, pools & spas, aquariums & reef tanks, water ionizers, drinking water and more.FEATURES:Measures electrical conductivity (EC), total dissolved solids (TDS). Excellent for nutrient testingFour scales: EC: µS, mS; TDS: ppm, 0.5 (NaCl) & 0.7 (442™)Automatic Temperature Compensation (ATC)Water resistantDigital Calibration (push button) to any point within the meter’s rangeAuto-off function, data-hold function and low-battery indicatorDisplay: large and easy-to-read LCD screen includes simultaneous temperature reading.Factory Calibrated: The COM-80 meter is calibrated with a 1413 µS solution.Includes a protective cap and batteries