Monitors, Meters & Controllers

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Glycerin Filled Pressure Gauge (1-100 PSI) + HM Digital TDS Meter + Tube Cutter

Pressure Gauge : Adequate PSI is crucial for correct operations for any reverse osmosis unit....

Save $3.04

Glycerin Filled Water Pressure Gauge Kit 2.5" Dial 1-100 PSI w/ Install parts

PRECISE: Adequate and accurate PSI tester is crucial for correct operation for any Reverse Osmosis...

HM Digital Dual Inline TDS Meter DM-1

The DM-1 helps you to measure the tap water coming in vs the purified water going...

Pack of 3 Replacement Leak Detector Pad

Replacement pad for Leak Detectors

Save $7.00

RO Reverse Osmosis Under-sink Filtration System Water Leak Detector Safety Valve

RO Reverse Osmosis Under-sink Filtration System Water Leak Detector Safety Valve 1/4 inch Automatically shut...

SAL-1700 Salinity & Temperature Testing Pen

SAL-1700 Salt and Temperature Meter This Newly released SAL-1700 is ideal for measuring the salinity...

Flow-lok Leak Detector with Drip Tray for RODI Systems

Leaks can cause tremendous amounts of damage. By having a simple leak detector on your...

TDS-3 Handheld TDS Meter

HM Digital TDS-3 Handheld TDS Meter is a valuable device for conveniently checking the Total...

TDS 342 PPM Calibration Solution

To ensure accurate measurements, periodic recalibration of your meters is recommended, especially when testing TDS...

FM-2: Filter Monitor with Volumizer

FM-2 RO Filter Monitor with Volumizer, a cutting-edge device that effortlessly tracks up to five...

PH-200 Waterproof pH Meter

Perfect for a wide range of liquid pH testing needs, this versatile tool is well-suited...

Triple Inline TDS Meter TRM-1

TRM-1 Triple Inline TDS Meter from HM Digital stands as one of the most indispensable...

Upgrade Dual Inline TDS Meter with Backlight DM-2

HM Digital DM-2 Commercial Dual Inline TDS Meter is a robust solution for monitoring the...

Single Inline TDS meter SM-1

The HM Digital SM-1 Single Inline TDS Meter is designed for measuring the Total Dissolved...

LBS-10 Leak Block Sensor & Solenoid Valve

Our LBS-10 LeakBlock Sensor can be used for numerous applications to avoid flooding and unnecessary...