HM Digital COM-300 Waterproof pH / EC / TDS / Temp Combo Meter

The HM Digitial 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, labs & scientific testing, pools & spas, boilers & cooling towers, water treatment and more.

Features

• Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature
• Five scales: pH, µS, 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 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-C3)
• Factory Calibrated (pH/EC/TDS)
• Includes translucent cap, 2 (AAA) alkaline batteries, pH 4 & 7 calibration solutions, pH storage solution and lanyard

Specification

• pH Range: 0 – 14 pH
• EC Range: 0 – 9990 µS; 0 – 9.99 mS
• TDS Range: 0 – 8560 ppm (0.7 Scale); 0 – 5000 ppm (0.5 Scale)
• Temperature Range: 0-55 °C; 32-130°F
• Resolution: pH: 0.1pH / EC 0 – 999 : 1?S ; 1000 – 9990 : ?S ; 0- 9.99 mS :0.01 mS / TDS 0 – 999 : 1ppm / 1000 – 9990: 10 ppm / Temperature 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: 101.5g (3.6 oz)
• 442 is a registered trademark of the Myron L Company.