HM Digital Waterproof Professional Series pH/EC/TDS/Temp Meter - IP-67 - 0-14 pH

Four Water Readings in One Waterproof Meter - 0-14 pH Range

Managing a nutrient reservoir usually means juggling separate pH, EC, TDS and temperature tools. The HM Digital Professional Series meter combines all four in one handheld unit, so you can check a reservoir quickly and adjust with confidence. Its waterproof housing is rated IP-67, and the sensor is replaceable.

This single meter suits home growers and small to mid-size indoor operations that want one dependable tool for routine reservoir checks. Commercial teams can keep several on hand for different rooms or systems.

Key Features & Benefits

• pH, EC, TDS and temperature — one tool covers the main nutrient solution checks.
• IP-67 waterproof housing — withstands wet conditions around hydroponic systems.
• Replaceable sensor (model SP-C3) — you can swap the probe instead of replacing the meter.
• Detachable platinum electrodes and pH glass sensor — a purpose-built probe for conductivity and pH measurement.
• Calibration solutions included — pH 4 and 7 solutions let you calibrate from the start.

Who Should Use HM Digital Professional Series Meter

Choose it if you run hydroponic systems, mix nutrient solutions, or test water quality and want one handheld meter for pH, EC, TDS and temperature.

About HM Digital Professional Series Meter

HM Digital makes water quality testing instruments. This model measures 0-14 pH, EC up to 9990 µS or 9.99 mS, and TDS up to 8560 ppm on the 0.7 scale or 5000 ppm on the 0.5 scale. Temperature reads from 0-55 °C (32-130 °F), with stated accuracy of +/- 2%. It runs on 2 AAA batteries, which are included.

Frequently Asked Questions

Q: What does the meter measure?
A: It measures pH, electrical conductivity (EC), total dissolved solids (TDS) and temperature. That covers the main checks for a nutrient solution.

Q: Is it waterproof?
A: The housing carries an IP-67 waterproof rating. That makes it suited to use around wet hydroponic equipment.

Q: What is in the box?
A: You get a translucent cap, 2 AAA alkaline batteries, pH 4 and 7 calibration solutions, pH storage solution and a lanyard.

Q: What does TDS mean?
A: TDS stands for total dissolved solids, the amount of dissolved material in water, shown in ppm. This meter offers 0.5 and 0.7 scale ranges.

Q: Can I replace the sensor?
A: Yes. The sensor is replaceable, and the replacement model is SP-C3.