Find the right instrument.

TDS-3

With its rugged design and build, the TDS-3 is an ideal meter (tool) that can be used for any application; Ranging from water purification to hydroponics to industrial wastewater treatment. It comes with a black vinyl carrying case, protecting it when carried in a toolbox.

TDS-4TM

The TDS-4TM handheld meter is ideal for testing TDS and salt levels of freshwater aquariums and ponds. It can also be used for testing water filtration and purification systems, such as RO and DI, to know when to change filters and membranes.

TDS-EZ

The #1 selling handheld TDS meter in the world! This economically priced meter offers unparalleled value and quality. Its attractive housing and retail-ready packing make it an ideal low-cost meter.

TDS-4

The TDS-4 is an ideal pocket meter that can be used for any and all applications, ranging from water purification to hydroponics, to aquariums, to industrial wastewater treatment.

EC-3

With its rugged design and build, the EC-3 is an ideal meter (tool) that can be used for any application; Ranging from water purification to hydroponics to industrial wastewater treatment. It comes with a black vinyl carrying case, protecting it when carried in a toolbox.

ORP-200

The ORP-200 is a professional-grade ORP meter ideal for all ORP testing, including anti-oxidant measurement, water purification applications, ionizers, agriculture, aquariums & aquaculture, chlorine monitoring, cooling tower disinfection, environmental testing, fruit & vegetable washing, hydroponics, metal finishing, ozone system monitoring, pharmaceutical & medical applications, pools & spas, pulp bleaching, vineyards & wineries, and water treatment.

HM-500

HM Digital’s HydroMaster (HM-500) is the most versatile continuous monitor, indicating pH, EC/TDS & Temp °C/°F providing accurate, stable readings the user can rely on. This unit can be wall mounted, is portable due to its rechargeable battery, and can be used as a benchtop monitor with its stand.

HM-200

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-100

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.

DM-2

The DM-2 is a commercial-grade monitor measuring TDS feed (input) water vs. product (output) water of a water filtration system at any time. With its shielded cables and diagnostic messaging this robust device is ideal for Reverse Osmosis (RO), Deionized water (DI) filtration systems that work well in applications such as drinking or potable water, Water treatment, Aquariums, Hydroponics, and many more.

DM-2EC

The DM-2EC is a commercial-grade monitor measuring ELECTRICAL CONDUCTIVITY feed (input) water vs. product (output) water of a water filtration system at any time. With its shielded cables and diagnostic messaging this robust device is ideal for Reverse Osmosis (RO), Deionized water (DI) filtration systems that work well in applications such as industrial water filtration systems for car washes, window washing, manufacturing, and food processing.

DM-3

The DM-3 is a commercial-grade EC/TDS monitor measuring EC/TDS feed (input) water vs. product (output) water of a water filtration system at any time. DM-3 has a large backlit screen that you will be able to see the readings in dark environments. With its shielded cables and diagnostic messaging this robust device is ideal for Reverse Osmosis (RO), Deionized water (DI) filtration systems that work well in applications such as drinking or potable water, Water treatment, Aquariums, Hydroponics, and many more

SCM-1000

The Smart Digital Refractometer that is always ready.

PSC-154

The PSC-154 controller monitors and controls TDS/EC levels for high-output commercial systems. It has an extended range, digital calibration, on-screen temperature, tri-color display, and 4-20mA output.

PSC-150

The new controller includes an extended range, digital calibration, on-screen temperature, and a tri-color display.

PSC-54

The PSC-54 is a NEW product from HM Digital offering extended range EC/TDS testing for commercial or industrial water treatment professional. This “mini” controller has an adjustable relay able to control a pump or valve with a 4-20mA output.

PSC-50

The PSC-50 controller has a maximum set point to help maintain a limit of TDS/EC allowed in the water. When the measuring water exceed the TDS/EC level, the alarm and relay will turn on. If the TDS/EC level drops below the set point, the controller deactivate the alarm and switch the relay contacts back to the normal position.

CIC-150

The CIC controllers can monitor and control dosing and/or injection systems. This unit will control one system at a time.

CIC-152

The CIC controllers can monitor and control dosing and/or injection systems. This unit will control 2 separate systems.

LBS-10

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.

SP-C1

SP-C2

SP-C3

SP-C5

SP-P2

SP-P5