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Dual Inline TDS Meter DM-1 - HM Digital

SKU: 200031


  • Why didn't I have one when I started!? By TriggerThis on 4/13/14

    A must have!
    I didn't have one, almost crashed my tank putting 30TDS top off water in it every day because I didn't know my DI was exhauseted.
    Don't have to worry any more
    Literally takes 6 seconds to install
    Great product
  • WORKS WELL UNTIL CALIBRATION IS NEEDED By NONE on 4/10/14

    GOOD LUCK CALIBRATING FOR THE AVERAGE JOE. AT THIS POINT IMO IT BECOMES DISPOSABLE. FOR THE PRICE AND GETTING SEVERAL YEARS USE IT IS WHAT IT IS.
  • put a few on your rodi system By Chicago on 3/25/14

    I love these things. I use two of them on my system. Use for
    1. supply water going in
    2. water after the pre filters and after carbon
    3. after the reverse membrane but beofre the di cartridges
    4 last one after the di cartridges to let me know how the final water is.

    so easy and great to monitor.
  • This works really well By Bob on 3/4/14

    Hooked this up to my older RO unit and was able to see how well the membrane is performing. Its especially amazing to see the difference between the input and output.
  • Great addition By Manfred on 2/18/14

    Another way to determine when filter changes are needed. You can see the sediment filter and when it gets dirty. You can see the color change in the DI filter but this meter goes beyond that and confirms numerically what you see actually. Just another RODI precautionary measure.
  • Great Feedback for RO Membrane By Steve on 2/13/14

    I had no idea whether my RO membrane was ready for replacement before installing this TDS meter. It allows you to monitor the performance of the membrane.
  • Works great By reddog on 2/11/14

    These seem to work very well. One came on my BRS 5-stage RODI system. It had one line of display missing so they sent me a new one asap. It's great to be able to see your incoming TDS and outgoing TDS on the RODI system.
  • Must have for a rodi system By nicholas on 2/9/14

    I have one of these on my rodi unit now that i thought was reading incorrect but come to find out i got a build a unit from BRS and my first rodi unit didn't work correctly and now it reads right where it should. this definatly saved my tanks from utter distruction
  • would recommend this product to a friend By Josh on 1/12/14

    I have been thinking about getting one of these for a long time. I wish I hadn't waited. Takes guesswork out of filter changes. So easy to install.
  • works everyitme By Jason on 1/12/14

    easy to use and easy install and I know right when to change my filters.

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