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HM Digital COM-360 Professional pH/EC/TDS/Temp Meter – 4-in-1 Water Quality Tester
HM Digital COM-360 Professional 4-in-1 pH/EC/TDS/Temp Meter
The HM Digital COM-360 is a professional-grade, multi-parameter water quality meter that measures pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature — all in one rugged, water-resistant handheld device. Trusted by hydroponics growers, aquaculture professionals, lab technicians, pool operators, and water treatment specialists worldwide.
Key Benefits
✅ 4-in-1 measurement — pH, EC, TDS, and Temperature in a single meter
✅ Five measurement scales — pH, µS, mS, ppm 0.5 (NaCl), and ppm 0.7 (442™)
✅ Automatic Temperature Compensation (ATC) — three selectable temperature coefficients for accurate readings across conditions
✅ Water-resistant housing — built for field and lab use
✅ Digital push-button calibration — calibrate to any point within range with ease
✅ Replaceable sensor (SP-CP) — extend the life of your meter without replacing the whole unit
✅ Factory calibrated — pH, EC, and TDS ready out of the box
✅ Large simultaneous LCD display — reads primary parameter and temperature at the same time
✅ Auto-off, data-hold & low-battery indicator — smart features for field use
Ideal Applications
Hydroponics & indoor growing
Aquaculture & fish farming
Water purification & treatment
Pools, spas & cooling towers
Labs & scientific research
Wastewater regulation & ecology testing
Colloidal silver production
Boiler water monitoring
What's in the Box
HM Digital COM-360 meter
Detachable platinum electrode & pH glass sensor with reference tube
Translucent protective cap
pH 4 & pH 7 calibration solutions
pH storage solution
Lanyard
2 x AAA alkaline batteries (included)
Specifications
SKU: 50040
pH Range: 0–14 pH
EC Range: 0–9,990 µS | 0–9.99 mS
TDS Range: 0–8,560 ppm (0.7 Scale) | 0–5,000 ppm (0.5 Scale)
Temperature Range: 0–55°C | 32–130°F
Accuracy: ±2%
Resolution: 0–99: 0.1 µS/ppm / 0.01 mS | 100–999: 1 µS/ppm | 1,000–9,990: 10 µS/ppm | Temp: 0.1°C/F
EC→TDS Conversion: Non-linear (KCl, 442™, or NaCl — user selectable)
Probe: Detachable platinum electrodes & pH glass sensor with reference tube; replaceable (SP-CP)
Housing: Water-resistant
Power: 2 × AAA batteries (included)
Dimensions: 20.0 × 3.4 × 3.4 cm (7.8 × 1.3 × 1.3 in)
Weight: 110 g (4.0 oz)
Origin: USA
442™ is a registered trademark of the Myron L Company.
