HM Digital Dual TDS Meter Monitors In & Out DM-1

  • Model: DM-1
  • Shipping Weight: 0.3kilos
  • Manufactured by: HM Digital

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$44.05  (44%) off RRP

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HM Digital Dual TDS Meter DM-1 for testing total dissolved solids (ppm.)

This is essential for aquarium systems and for testing of RO reverse osmosis water purfication systems and water filters.

Measure the tap water coming in vs. the purified water going out of your water filtration system at any time.

Can also be configured to monitor Membrane Outlet and DI


- Displays TDS levels of the feed water and product water with in & out electrode probes.

- Highly efficient and accurate due to its advanced microprocessor technology.

- Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use.

- Dual Range 0-9990 ppm (From 0 - 999 ppm the resolution is 1 ppm. 

From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x10' image.)

- Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.

- Comes equipped with Mur-lok Quick-Connect T-fittings.

- Installs quickly and easily.


- Range: 0-9990 ppm

- Accuracy: 2%

- Conversion Factor: NaCl (avg. 0.5)

- Cable Length: 24.5" (including sensor)

- Fittings: 1/4" standard

- Power source: 2 x 1.5V button cell batteries (included)

- Battery life: approx. 1000 hours of continuous use

- Size: 7.6 x 2 x 4.7 cm (3 x .8 x 1.9 in.)

- Weight: 79.4 g (2.8 oz.)

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