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Products

DM-3

Deluxe Dual Line TDS Monitor, Two Monitors (IN & Out)

LBS-10

Leak Block Sensor

Our LBS-10 LeakBlock Sensor can be used for numerous applications to avoid flooding and unnecessary leaks. The LBS-10 LeakBlock Sensor is perfect for traditional applications: RO Systems, inlets of a Filter System, and individual Filters. The robust commercial design of our latching valve, enables the LBS-10 LeakBlock Sensor to be used for additional applications.

PH-80 pH HydroTester

Water resistant pH/Temperature meter

The PH-80 is an economical choice for a reliable pH meter. Water resistant with digital calibration, you can't go wrong with this amazing pH tester

PH-200

Professional Waterproof Handheld pH and Temperatur

The PH-200 is one of the best handheld pH testers, with pinpoint accuracy, digital calibration and a replaceable sensor.

AquaPro Series (AP-1 and AP-2)

Handheld TDS and EC Meters with Digital Calibratio

The AquaPro is the latest water quality tester from HM Digital. This easy-to-use handheld meter instantly measures total dissolved solids (TDS), an indicator of overall water quality. With its stylish design, superior features and accuracy, it's a must-have for every home. How Pure is Your Water?

PSC-150

Extended Range EC/TDS Controller

A EC/TDS controller with a wide range, on-screen temperature display, digital calibration, 4-20 mA output signal and much more!

COM-100 Waterproof EC/TDS/Temp Combo Meter

Waterproof EC/TDS/Temp Combo Meter

The best value waterproof EC/TDS meter in the world! http://www.tdsmeter.com/products/com100.html

TDS-3

Handheld TDS Meter with Case and Temperature

The industry standard for handheld TDS meters! This is the most popular TDS meter in the world! HM Digital is the ONLY manufacturer of the original and authentic TDS-3. This patented product is often imitated, but the only genuine TDS-3 is made by HM Digital.

TDS-4

Pocket size handheld TDS tester

The TDS-4 is one of the smallest and lightest handheld TDS meters available. It's very accurate, easy to use and a great value!

FM-2 Filter Monitor

Filter Monitor with Five-Stage Timer and Volumizer

The Filter Monitor is a must-have for any water filtration system, featuring alarms and volume gauges for up to five individual stages. The multi-color lights on the faucet indicator disc alert the user when to change a filter cartridge or membrane. With its stylish design, it's perfect for today's modern home. How Pure is Your Water?

DM-2

Commercial Inline Dual TDS Monitor

The DM-2 is a splashproof digital TDS monitor with digital calibration and excellent accuracy. It is ideal for commercial reverse osmosis (RO) systems.

DM-1

Dual Inline TDS Monitor

The DM-1 is an excellent dual inline TDS monitor that can measure total dissolved solids levels (in ppm) at two sensing points. It is ideal for reverse osmosis systems and other types of water filtration and purification systems that remove TDS.

ORP-200

Handheld Waterproof ORP Meter with Temperature

The ORP-200 is a high quality, fast acting ORP-200 with excellent accuracy and digital calibration. It has a range of -999 to +1000mV, and a replaceable sensor.

TDS-EZ

Economy Handheld TDS Meter

The TDS-EZ is one of the best-selling handheld TDS testers in the world. It's very easy to use and amazingly accurate for the price, with a wide range of 0-9990 ppm.

COM-80 HydroTester

EC/TDS/Temperature Handheld Meter (Water Resistant

The COM-80 is an incredible water resistant handheld meter that measures TDS (Total Dissolved Solids) EC (Electrical Conductivity) and temperature. It has digital calibration, a wide range and amazing accuracy.

EC-3 Meter

Handheld EC Tester with Carrying Case

The EC-3 is one of the most popular EC (electrical conductivity) meters in the world. It's easy to use, has a large display, digital thermometer, wide range and carrying case.

TRM-1

Triple Inline TDS Monitor

The brand new TRM-1 is the first ever battery-powered three sensor inline TDS monitor that is ideal for sensing TDS levels at three different points, such as with multi-stage RO systems or RO/DI combination systems.

PS-100

Panel Mount TDS Controller

The PS-100 is a panel mount TDS controller with a range of 0-999 ppm, ideal for commercial or industrial RO systems.

CIC-152

Dual Control Dosing/Injection TDS/EC Controller

The CIC-152 is a digital dual control TDS/EC controller with a minimum and maximum set point to control TDs/EC levels within a range via a relay control (simple switch). It has a wide range, excellent accuracy, digital calibration and temperature display. All of HM Digital's controller include a sensor.

PSC-154 EC/TDS Controller

EC/TDS Controller with 4-20mA Output Signal

HM Digital's PSC-154 is an extended range EC/TDS controller with a 4-20mA output signal. The PSC-154 is an EC/TDS controller with a range of 0.0 - 9999 µS (0.0 - 5000 ppm). It includes on-screen temperature display in Celsius or Fahrenheit, digital calibration, a bright 3-color LED display, ATC, a programmable set point and more! The controller includes a ½” sensor at no extra cost, making the PSC-154 controller an incredible value!

PH-BUF

pH Buffer Solution Variety Pack

HM Digital's pH buffer solution comes in powder form, so it's lightweight, takes up very little space, is inexpensive and has an indefinite shelf life. The pack includes a 100 ml bottle and 12 packets of pH buffer solution powder (3 x 4.0; 6 x 7.0; 3 x 10.01). Total volume is 1.2 liters.

C-342 and C-1000

TDS/EC Calibration Solutions

The C-342 is a 342 ppm (NaCl) or 700 µS calibration solution. the C-1000 is a 1000 ppm (NaCl) or 2000 µS calibration solution. These solutions are ideal for any type or brand of TDS or EC meter. Each bottle is 90 ml (3 oz)

COM-300PK(Pro-Kit)

Combo Pen_4 in 1(PH/EC/TDS/TEMP)

Professional grade PH/EC/TDS/Temp meter now comes in a compact portable case. The Pro Kit includes calibration solutions as well to make ensure your testing is always on the point.

HM-100

HM-100: Continuous pH/EC/TDS/Temp Monitor

The HM-100 is a pH/EC/TDS/Temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.

HM-200

HM-200: Portable pH/EC/TDS/Temp Monitor

The HM-200 is a versatile portable pH/EC/TDS/Temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.

HM-500

HM-500 HydroMaster: EC/TDS, pH, Temp Continuous Mo

The HM-500 is the most versatile continuous monitor indicating EC/TDS, pH, and Temp providing accurate, stable readings the user can rely on. With its rechargeable battery this unit is portable or can be wall mounted.. To make is even more user friendly, it comes equipped with touch screen, high and low alarm set points, and recorded readings. It is ideal for hydroponics and other applications such as lab, pools, aquariums etc.