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HM Digital DM-1 Inline TDS Monitor For GE Merlin Reverse Osmosis System The DM-1 Digital TDS Monitor is The Perfect Way To Monitor the Quality of Your RO Water
FEATURES:
Auto-Off function conserves battery power
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)
Comes equipped with John Guest Quick-Connect 1/2" T-fitting for the inlet and 3/8" T-fitting for the outlet. Installs quickly and easily.
Measures the tap water coming in vs. the purified water going out of your system at any time. Use the monitor to determine when the membranes need to be changed.