Search This Site

(Search by Product Type i.e. Level or Brand Name i.e. Walchem)

Total Dissolved Solids Monitor RO-CHECK™ POU TDS Monitor from Myron L Company

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

RO-CHECK,POU,TDS,Monitor,Myron L CompanyTotal Dissolved Solids (TDS) are the total amount of mobile charged ions, including minerals, salts or metals dissolved in a given volume of water, expressed in units of mg per unit volume of water (mg/L), also referred to as parts per million (ppm). Total Dissolved Solids (TDS) is directly related to the purity of water and the quality of water purification systems and affects everything that consumes, lives in, or uses water, whether organic or inorganic, whether for better or for worse.

The innovative Myron L RO-CHECK (U.S. Patent # 4,762,611) reliably monitors total dissolved solids 24 hours a day. A quick glance at the display assures RO users of their water TDS quality. Should membrane failure or other problems cause TDS to rise above the set point, the words "CHECK SYSTEM" flash in the LCD. This silent indicator alerts, rather than alarms, the user that service may be required.

Easily installed on most popular faucets, the RO-CHECK features 16 set point choices and is ideal for monitoring water of almost any TDS quality.

Two display modes:


TDS is below set point

RO-CHECK,POU,TDS,Monitor,Myron L Company


TDS is above set point

RO-CHECK,POU,TDS,Monitor,Myron L CompanyFeatures:

  • High Tech liquid crystal display

  • Fits 1.250" diameter faucets

  • Runs one year continuously on one alkaline 9 volt battery (not supplied)

  • 16 TDS set points, 30-750 ppm, suitable for almost any water

  • ±10% accuracy at 68°F (20°C)

  • Single flow-through sensor

  • 316SS electrodes double-sealed to prevent leaks

  • Includes Parker Hannifin fittings for 1/4" tubing

  • 5' cable with fast telephone-type connector

  • One-year limited warranty

RO CHECK Data Sheet


About Us

Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


Our Products

Dataloggers, sensors, pumps, recorders, hand held instruments, flow instrumentation, level controls, valves, instrumentation, containers, tanks, transmitters, data loggers, digital indicators, mixers and agitators, pressure intrumentation, analyzers and controllers for a variety of industrial applications such as water quality, pH/ORP and more.

Website Content

Water Analyzers and Controllers, Wireless Products, Corrosion Monitoring Equipment, Cooling Tower and Boiler Controllers, a wide variety of Pumps, Valves, Dataloggers and Recorders, HVAC, Instrumentation, Skids and Systems, Containers and Tanks from world leading manufacturers are products you will find on this site.

Get in Touch