HM Digital DM-1 In-Line Dual TDS Monitor, 0-9990 ppm Range, 2% Readout Accuracy

Product Description: How Pure is Your Water? HM Digital/'s DM-1 is a dual inline monitor that measures TDS from 0 to 9990 ppm.It includes batteries, two sensors and two 1/4 quick-connect T-fittings.The DM-1 is an easy and convenient method of determining TDS levels for water filtration/purification systems such as reverse osmosis (RO), deionization (DI) and more.It/'s very useful for coolers or under-the-sink systems.For any type of system that removes TDS, you can install the /'IN/' sensor on your tap water (before the system) and the /'OUT/' sensor on your product water (after your filtration system) to determine the filter/membrane/'s effective operating (rejection) rate.'