COM-300

The COM-300 is a professional-grade meter designed for accurate and reliable measurement of water quality parameters, including pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature. This versatile device is ideal for a wide range of applications such as hydroponics, water purification, wastewater regulation, aquaculture, colloidal silver production, laboratories, pools and spas, ecology testing, boilers and cooling towers, and general water treatment processes.

Features

• Multi-Parameter Measurement: Measures pH, EC, TDS, and Temperature.
• Five Scales: Includes pH, µS, mS, ppm (0.5 NaCl Scale), and ppm (0.7 442™ Scale).
• Automatic Temperature Compensation (ATC): Utilizes three temperature coefficients for precise readings.
• Waterproof Housing: IP-67-rated waterproof casing ensures durability and floatability.
• Digital Calibration: Push-button calibration for any point within the meter’s range.
• Convenient Functions: Features auto-off, data-hold, and low-battery indicators.
• Clear Display: Large LCD screen with simultaneous temperature reading.
• Replaceable Sensor: Detachable SP-C3 sensor for easy replacement.
• Factory Calibrated: Pre-calibrated for pH, EC, and TDS measurements.
• Complete Kit: Includes a translucent cap, 2 AAA alkaline batteries, pH 4 & 7 calibration solutions, pH storage solution, and lanyard.

Specifications

Measurement Ranges

• pH: 0 – 14 pH
• EC: 0 – 9990 µS; 0 – 9.99 mS
• TDS: 0 – 8560 ppm (0.7 Scale); 0 – 5000 ppm (0.5 Scale)
• Temperature: 0 – 55 °C (32 – 130 °F)

Resolution

• pH: 0.1 pH
• EC: 0 – 999: 1 µS; 1000 – 9990 µS: 10 µS; 0 – 9.99 mS: 0.01 mS
• TDS: 0 – 999: 1 ppm; 1000 – 9990: 10 ppm
• Temperature: 0.1 °C/°F

Accuracy

• ± 2%

Additional Specifications

• EC to TDS Conversion Factor: Non-linear conversions for KCl, 442™, or NaCl solutions, user-selectable.
• Probe: Detachable platinum electrodes with a pH glass sensor and reference tube electrodes.
• Housing: IP-67 waterproof and floatable design.
• Power Source: 2 AAA batteries (included).
• Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches).
• Weight: 101.5 g (3.6 oz).

Note: "442™" is a registered trademark of the Myron L Company.