These products can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP),
which is known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov

Click here for detailed image

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:


(Pictured with faucet; not supplied.)


TDS is below set point

TDS is above set point



  • 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


Additional Information
RO-CHECK™ Data Sheet
(includes specs, options & order info)

click here: PDF

Myron L® RO-CHECK's have a One (1) Year Warranty. If any unit fails to function normally, return it to the factory prepaid. If, in the opinion of the factory, failure was due to materials or workmanship, repair or replacement will be made without charge. A reasonable service charge will be made for diagnosis or repairs due to normal wear, abuse or tampering. Warranty is limited to the repair or replacement of the Myron L® RO-CHECK only. The Myron L® Company assumes no other responsibility or liability.



                      Site last updated on: 30-Apr-2008 

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