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Dual Inline TDS Meter DM-1 - HM Digital

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Dual Inline TDS Meter DM-1 - HM Digital

SKU: 200031
121 Review(s)
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  • Easy and Efficient By Ed on 5/29/2015

    Took about 5 minutes to set up, easy install, easy to use. Everyone should have one!
  • I don't know why I didn't order this sooner! By Butch on 5/29/2015

    This product is easy to install and even easier to use. If you are in the market for an RODI, purchase this at the same time to take the guess work out of what your TDS is on each and every water change.
  • Does the job By phil on 4/4/2015

    I bought this already installed on 4 unit RO/DI system. First one stopped working after about 8 months. could not check if was batteries as was unable to find any batteries that I could replace. Fortunately after contacting customer support found out that it was still under warranty and they immediately sent out a replacement. Happy once again and kudos to customer support. The meter is a nice thing to have on my RO system.
  • Must have item By Travis on 3/9/2015

    This is definitely an integral part to an RO/DI system. I like being about to know with a flip of the switch what my TDS is after each filter segment. Easily indicates when a filter needs replaced.
  • THIS IS A MUST HAVE By MARY on 12/8/2014

    Really simple to install and operate.
  • Quality TDS Meter at a Great Price By Davide on 11/21/2014

    This product is easy to install and and displays an accurate reading. With the push of a button, it displays what your current reading is and then shuts off after a couple min.

    I've had this product since the beginning of 2014 and I haven't had to perform any maintenance on it.
  • Added a second to my rodi system By Jonathan on 11/10/2014

    I added a second tds meter to monitor the incoming water supply and waste water for use in other, less sensitive freshwater tanks. Very easy to add these, just cut the existing tubing and install this inline.
  • Works well By Kyle on 11/4/2014

    These meters work well, continually updating the reading. I like to place mine after the ro membrane, and after the di resin. I find that the reading after the membrane is around 6-7, and after the di is 0. I have found that the di resin will continue to produce 0 tds water for a short time after the color-changing resin changes color.
  • Great tool By June2881 on 10/16/2014

    I did not have a tds meter installed to my RODI system when first starting out with my reef tank. After 4-5 months of excellent water parameters I suddenly had a huge phosphate spike. After realizing the problem was my RODI filters expiring I added this meter and never looked back. Excellent and very important tool.
  • Usefull TDS Meter By Mark on 9/29/2014

    I have this meter testing the water coming out of my membrane as well as the water coming out of my DI resin. It is very accurate and helpful. When the time comes where it need to be calibrated, the price point is good enough to purchase another.

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