HM Digital Waterproof EC/TDS/Temp Combo Meter

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)