
HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter

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Is the HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter Right for You?
If you're looking for a professional-grade water quality testing meter, the HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter is an outstanding choice. Designed for a wide range of applications, including hydroponics, water treatment, scientific research, and pool maintenance, this meter delivers precise readings for pH, EC, TDS, salinity, and temperature.
- Features & Benefits
- Product Specifications
- What is included?
- Warranty Policy
HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter
The HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter is an advanced, high-precision water quality tester designed for professional and home applications. Ideal for hydroponics, water purification, scientific research, and pool maintenance, this meter ensures accurate and reliable measurements with ease.

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Measures pH, EC, TDS, salinity & temperature.
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Five scales: µS, mS, ppm for versatility.
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ATC with three coefficients for precision.
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Waterproof IP67-rated for durability.
Why Choose the HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter?
The HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter is a high-precision instrument designed for accurate water quality analysis. It provides reliable measurements for pH, EC, TDS, salinity, and temperature, making it ideal for hydroponics, water treatment, scientific testing, and pool maintenance.
Why HM Digital?
HM Digital is a trusted name in water quality testing, offering innovative and reliable solutions for growers, aquarium enthusiasts, and professionals. Designed for precision, its advanced meters provide accurate TDS and temperature readings, ensuring optimal water conditions. With user-friendly features like digital calibration and a durable, water-resistant design, HM Digital products help you maintain consistency and efficiency in your water monitoring routine.

Why Buy From Us?
At GreenThumbDepot, you're not just another sale to a faceless corporation. You're partnering with a team genuinely invested in your success. Our legendary customer service, combined with a promise of unbeatable prices, sets us apart. We're here for you, always.
FAQ Section








Specifications
HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter Specifications | |
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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 | 0-99: 0.1 µS/ppm/ 0.01mS 100-999: 1 µS/ppm 1000-9990: 10 µS/ppm Temperature resolution: 0.1 °C/F |
Accuracy | ±2% |
EC to TDS Conversion Factor | Non-linear conversions for KCl, 442TM, or NaCl solutions, selectable by the user |
Probe | Detachable platinum electrodes & pH glass sensor with reference tube electrodes |
Housing | IP-67 Waterproof (submersible; floats) |
Power Source | 2 x AAA batteries (included) |
Dimensions | 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 inches) |
Weight | 164g (5.8 oz) |
What’s in the Box?
The HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter package includes:
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HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter
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Replaceable pH glass sensor & detachable platinum electrode
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2 x AAA batteries (pre-installed)
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User manual with step-by-step setup, calibration, and maintenance instructions
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pH 4 & pH 7 calibration solutions and pH storage solution
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Protective cap and lanyard for added convenience

Warranty Policy
Please check out the manufacturers website for Warranty related issues.