HM Digital TDS & Water Quality Monitors
HM Digital TDS & Water Quality Monitors — Inline, Inline & Handheld
Monitor your water purity in real time with HM Digital — the trusted name in TDS, EC, and water quality monitoring for home filtration, reverse osmosis systems, hydroponics, aquariums, and commercial water treatment. HM Digital monitors make it effortless to verify that your filtration system is working at peak performance.
What HM Digital Monitors Measure
- TDS (Total Dissolved Solids) — Measure impurity levels in ppm to confirm filter effectiveness
- EC (Electrical Conductivity) — Assess nutrient concentration for hydroponics and aquaponics
- Temperature — Simultaneous water temperature readout on select models
- Multi-Point Monitoring — Up to 3 test points (feed water, intermediate, and product water) to track RO/DI purification performance end-to-end
Monitor Types Available
- Inline Monitors — Permanent installation on RO or DI systems for continuous real-time display
- Handheld / Pocket Meters — Portable spot-testing for travel, aquariums, and field use
- Dual & Triple Display Monitors — Compare feed vs. product water simultaneously for instant membrane performance verification
Ideal Applications
- Reverse Osmosis (RO) & Deionized (DI) Water Filtration Systems
- Hydroponics Nutrient Solution Preparation
- Aquariums & Reef Tanks
- Drinking Water & Whole-House Filtration Verification
- Commercial & Industrial Water Treatment
All HM Digital monitors are designed for ease of use and long-term reliability — no calibration required for most TDS models. Find your model below and ensure your water is always performing to spec.
