Description
Product Description:
The HM Digital COM-300 is a high-precision 4-in-1 combo meter engineered for professional-grade water quality testing. Combining TDS (Total Dissolved Solids), EC (Electrical Conductivity), pH, and Temperature measurement into a single compact, waterproof device, the COM-300 is the perfect tool for hydroponics, drinking water analysis, aquariums, labs, and agriculture.
Designed in the USA and trusted worldwide, this meter offers auto-calibration, temperature compensation, and non-linear EC-to-TDS conversion, delivering accurate and reliable results in all testing conditions.
Key Features:
✅ 4-in-1 Measurement – Measures pH, EC, TDS (in both 0.5 & 0.7 scale), and Temperature
✅ USA Engineered – Trusted HM Digital brand with premium build quality
✅ Waterproof Housing – IP67-rated for wet environments
✅ Auto Calibration & Temperature Compensation – For consistent and reliable readings
✅ Backlit Digital Display – Easy-to-read screen for dark or bright environments
✅ Replaceable pH Electrode – Long-term value and extended usability
✅ Hold Function & Auto-Off – Enhances battery life and usability
✅ Non-Linear EC to TDS Conversion – Advanced accuracy for diverse water types
✅ Wide Application – Ideal for hydroponics, drinking water, aquaculture, RO systems, labs, and more
Technical Specifications:
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TDS Range: 0–5000 ppm (0.5 & 0.7 conversion factor selectable)
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EC Range: 0–9990 µS / 0–9.99 mS
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pH Range: 0.0 – 14.0
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Temperature Range: 0–80°C / 32–176°F
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Accuracy: ±2% (EC/TDS), ±0.2 (pH)
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Display: Backlit LCD
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Battery: 3× Button Cell (included)
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Auto-Off: Yes
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Waterproof Rating: IP67
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Country of Design: USA
Applications:
💧 Hydroponic and Aquaponic Systems
🐠 Aquariums and Fish Tanks
🚰 Drinking & Filtered Water
🏭 Laboratory Testing
🌿 Agriculture & Soil-Free Growing
🧪 Reverse Osmosis Systems & Water Purifiers
SEO Keywords:
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