Product Name: Digital COM-300 Waterproof Professional pH / Ec / TDS / Temp Meter for All Water Quality Testing Model NO.: COM-300 Type: pH/Ec/TDS/Temp Meter Certification: RoHS, FCC, CE Portable: Portable Appliance: Food Analysis, Medical Research, Biochemistry, Hydroponics Aquariums and More Display: Digital Power Source: 2 X 1.5V AAA Alkaline Batteries Included Calibration: Digital Calibration by Push Button Transport Package: Carton Packing Specification: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) Origin: China HS Code: 84219910 Product Description COM-300COM-300: Waterproof Professional Series pH/EC/TDS/Temp MeterThe COM-300 is a professional grade level pH/EC/TDS/Temp meter ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.FEATURES:Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity and TemperatureFive scales: pH, µS, mS, ppm 0.5 (NaCl) Scale & 0.7 (442™) ScaleAutomatic Temperature Compensation (ATC) using three temperature coefficientsWaterproof housing (IP-67 rating)Digital 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 readingReplaceable Sensor (model SP-CP)Factory Calibrated (pH/EC/TDS)Includes translucent cap, 2 (AAA) alkaline batteries, pH 4 & 7 calibration solutions, pH storage solution and lanyardPRODUCT DEscriptION:pH Range: 0 - 14 pHEC Range: 0 - 9990 µS; 0 - 9.99 mSTDS Range: 0 - 8560 ppm (0.7 Scale); 0 - 5000 ppm (0.5 Scale)Temperature Range: 0-55 °C; 32-130°FResolution: 0-99: 0.1 µS/ppm/ 0.01mS ; 100-999: 1 µS/ppm; 1000-9990: 10 µS/ppm. Temp. resolution is 0.1 °C/FAccuracy: +/- 2%EC to TDS Conversion Factor: Non-linear conversions for KCl, 442TM or NaCl solutions, selected by the user.Probe: Detachable platinum electrodes & pH glass sensor with reference tube electrodesHousing: IP-67 Waterproof (submersible; floats)Power source: 2 x Triple A (AAA) includedDimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches)Weight: 101.5g (3.6 oz)Application:Aquaculture,Aquarium,Drinking Water,Food & Beverage,Hydroponics,Industrial,Pool/Spa,Water TreatmentMore Choices: