COM-300L: Waterproof Professional Series pH/EC/TDS/Temp Meter The COM-300L 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 Temperature Five scales: pH, S, mS, ppm 0.5 (NaCl) Scale & 0.7 (442) Scale Automatic Temperature Compensation (ATC) using three temperature coefficients Waterproof housing (IP-67 rating) Digital Calibration (push button) to any point within the meters range Auto-off function, data-hold function and low-battery indicator Display: large and easy-to-read LCD screen includes simultaneous temperature reading Replaceable Sensor (model SP-C3) Factory Calibrated (pH/EC/TDS) Includes translucent cap, 2 (AAA) alkaline batteries, pH 4 & 7 calibration solutions, pH storage solution and lanyard Specifications pH Range: 0 14 pH EC Range: 0 9990 S; 0 9.99 mS TDS Range: 0 8560 ppm (0.7 Scale); 0 5000 ppm (0.5 Scale) Temperature Range: 0-55 C; 32-130F Resolution: 0-99: 0.1 S/ppm/ 0.01mS ; 100-999: 1 S/ppm; 1000-9990: 10 S/ppm. Temp. resolution is 0.1 C/F Accuracy: +/- 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 electrodes Housing: IP-67 Waterproof (submersible; floats) Power source: 2 x Triple A (AAA) included Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) Weight: 164g (5.8 oz)
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