The COM-100 is a professional level EC/TDS meter at an unbeatable price. Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. Features:Measures electrical conductivity (EC), total dissolved solids (TDS), salinity and temperature. Four scales:,"_µS, mS, ppm, ppt (mS and ppt are new) Three different non-linear EC-to-TDS conversion factors (KCl, 442TM, NaCl). Automatic Temperature Compensation (ATC) using three temperature coefficients Waterproof housing (IP-67 rating) Measurement Range: 0-9990,"_µS; 0-8560 ppm; 0-9.99 mS; 0-8.56 ppt Digital Calibration (push button) to any point within the meter's 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-C1) Factory Calibrated: The COM-100 meter is calibrated with a 1413,"_µS solution. The meter can be recalibrated with digital calibration using the push buttons, rather than a screwdriver. Includes a cap, batteries and lanyard. Specifications:EC Range: 0 - 9990,"_µS; 0 - 9.99 mS TDS Range: 0 - 8560 ppm (mg/L); 0 - 8.56 ppt Temperature Range: 0-80 C; 32-176 F Resolution: 0-99: 0.1,"_µS/ppm/mS/ppt; 100-999: 1,"_µS/ppm; 1000-9990: 10,"_µS/ppm. Temp. resolution is 0.1 C/F Accuracy: +/- 2% EC to TDS Conversion Factor: Non-linear conversions for KCl, 442 or NaCl solutions, selected by the user. Calibration: Digital calibration by push button. Probe: Detachable platinum electrodes Housing: IP-67 Waterproof (submersible; floats) Power source: 3 x 1.5V button cell batteries (included) (model LR44 or equivalent) Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) Weight: 90.7g (3.2 oz)
