HM DIGITAL

HM Digital COM-300 Temperature Conductivity EC TDS pH Meter

Name: HM Digital COM-300 Temperature Conductivity EC TDS pH Meter
Brand: HM DIGITAL
Price: 39500.0 LKR
Availability: InStock

Rs 39,500.00 LKR

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HM DIGITAL COM-300 Conductivity EC TDS pH Meter | Waterproof 4-in-1 Combo Tester

Professional Waterproof Multiparameter Meter for Hydroponics, Water Treatment & Lab Analysis in Sri Lanka

The HM Digital COM-300 is the ultimate 4-in-1 combo meter for professionals who demand precision and versatility in a single device. Replacing the need for multiple instruments, this advanced multiparameter tester accurately measures pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature. Engineered with a robust IP67 waterproof housing, the COM-300 is built to withstand submersion and float if dropped in water, making it the ideal choice for rugged fieldwork in Sri Lanka's agriculture, aquaculture, and water purification sectors.

What sets the COM-300 apart is its laboratory-grade accuracy combined with user-friendly features. It offers Automatic Temperature Compensation (ATC) to ensure precise readings in fluctuating environments and includes digital calibration for easy push-button adjustments. With its replaceable platinum electrode sensor and ability to measure across five different scales (pH, µS, mS, ppm 0.5 NaCl, and ppm 0.7 442™), this meter provides the comprehensive data needed for critical applications ranging from commercial hydroponics to scientific research and boiler water monitoring.

Key Features of the HM Digital COM-300 Combo Meter

4-in-1 Multiparameter Testing: Simultaneously measures pH, EC (Conductivity), TDS (Total Dissolved Solids), and Temperature, providing a complete water quality profile in seconds.
IP67 Waterproof & Floating Design: Fully sealed housing protects the electronics from moisture and dust; the meter floats if accidentally dropped in a tank or reservoir, preventing loss.
Automatic Temperature Compensation (ATC): Integrated sensor automatically corrects readings for temperature variations (0-55°C), ensuring accuracy without manual calculations.
Versatile Measurement Scales: Supports 5 measurement scales: pH, µS (microsiemens), mS (millisiemens), ppm (0.5 NaCl scale for general water), and ppm (0.7 442™ scale for natural water/hydroponics).
Replaceable Platinum Electrode: Features a high-quality, detachable SP-C3 sensor that can be easily replaced, extending the lifespan of the meter significantly.
Digital Push-Button Calibration: Effortless calibration to any point within the meter's range using simple push-button controls—no screwdrivers or manual trimming required.
Large LCD with Data Hold: Easy-to-read screen displays simultaneous temperature readings, low battery indicators, and a Data Hold function to freeze readings for recording.

Common Applications of HM Digital COM-300

Hydroponics & Agriculture: Precisely monitor nutrient strength (EC/TDS) and pH levels to optimize plant growth and prevent nutrient lockout in greenhouse systems.
Water Purification & Treatment: Verify the performance of Reverse Osmosis (RO) systems and deionization filters by checking input vs. output TDS levels.
Aquaculture & Pools: Ensure optimal water chemistry for fish farming, reef tanks, and swimming pools by tracking salinity, pH balance, and temperature.
Industrial & Lab Use: Ideal for testing boiler water, cooling towers, and wastewater regulation compliance where robust, multi-mode measurement is required.

Technical Specifications of the HM Digital COM-300

pH Range: 0.0 – 14.0 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: 0.1 pH | EC: 1 µS (0-999), 10 µS (1000-9990) | TDS: 1 ppm (0-999), 10 ppm (1000-9990)
Accuracy: pH: ±0.1 pH | EC/TDS: ±2%
ATC: Yes (0 – 50°C)
Calibration: Digital push-button to any point within the range
Probe Type: Replaceable Platinum Electrode (Model SP-C3)
Power Supply: 2 x AAA Alkaline Batteries (included)
Dimensions & Weight: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 in) | 101.5g (3.6 oz)