DS Monitor Online RO DI Water Filter ppm Meter 1/4"
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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.). Displays TDS levels of the Feed Water and Produ...