- Home /
- Dual Inline TDS Meter DM-1 - HM Digital
THIS IS A MUST HAVE By MARY on 12/8/2014MARY would recommend this product to a friendReally simple to install and operate.
Quality TDS Meter at a Great Price By Davide on 11/21/2014Davide would recommend this product to a friendThis 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 11/10/2014Jonathan would recommend this product to a friendI 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 11/4/2014Kyle would recommend this product to a friendThese 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 10/16/2014June2881 would recommend this product to a friendI 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 9/29/2014Mark would recommend this product to a friendI 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.
Helps to take the guess work out By Travis on 8/19/2014Travis would recommend this product to a friendVery easy to install and even move around if you are wondering what each area is doing. Changed mine over to the discharge side just to see what flushing does and I will tell you that it is a good idea to flush your RO before and after each use it does help. I only have about 190 TDS going in but while I'm flushing I have seen over 400 TDS coming out. This is a must have for anyone with an RO/DI unit.
Good product By emdrn05 on 5/19/2014emdrn05 would recommend this product to a friendI'm only giving this a 4 because the directions for installing it were lacking. Once I got it hooked up it seems to be working well. Definitely need to have one on your filter.
Must have By Eric on 5/8/2014Eric would recommend this product to a friendYou need this. Takes the guesswork out of filter replacement. Really simple to install and operate. Very nice for the price.
Great product By Richard on 4/20/2014Richard would recommend this product to a friendEasy to install, gives a simple quick way to monitor your filter performance.
How Can You Not Have One By Austin on 4/19/2014Austin would recommend this product to a friendhow do you know what your system is doing are you at 0 TDS? the dual meter tells you what is going in to your DI canister and what is coming out. No more Hoping my RO/DI unit is working right.
Must have item on RO/DI system By Rick on 4/18/2014Rick would recommend this product to a friendThis meter is a great addition to any system. Much easier then a pen type checker. To have confidence in the water going into your tank you need to know if the filter is running as it should be. With this you will know in seconds.
Pressure gauges, flush kits and TDS meters are eas ...
This video demonstrates the different TDS meters a ...
The DM-1 Dual Inline TDS Meter from HM Digital is one of the most important reverse osmosis accessories. This tool monitors the TDS of your reverse osmosis system in two places and lets you know exactly how the system is performing.
BulkReefSupply.com suggests installing the dual TDS meter post membrane and post DI stage. These two readings will notify you when it's time to change the RO membrane and DI resin. This unit features a digital display and comes with two 1/4" John Guest Quick Connect Tee's. As with all HM-Digital products, the DM-1 comes factory calibrated.
Deal of the Day!
Refractometer for Reading Salinity with Calibration FluidEnds in
Regular Price: $39.99
Special Price: $24.9900:00:00:00
- Rock & Sand
- Auto Top Off
- Cal, Alk & Trace
- Controllers & Testing
- Filter Media
- Fish & Coral Foods
- Fragging Supplies
- Heaters & Chillers
Pumps & Plumbing
- Submersible Pumps
- External Pumps
- Dosing Pumps
- Air Pumps & Accessories
- Salt & Maintenance
- Skimmers, Reactors & Filtration
- Sumps, Tanks & Refugiums
- Specials, New & BRS Gear
Send us your feedback
Let us know.
Phone Hours: 7am - 7pm CST M-Th
10am-4pm CST Friday
6325 Sandburg Road, Suite 400
Golden Valley, MN 55427 Map
View Larger Map 6325 Sandburg Road, Suite 400, Golden Valley, MN 55427