HM Digital‘s popular DM-2 dual inline TDS monitor, with a wide measurement range (0-9990 ppm), large, easy-to-read LCD display, splash-proof design and flexible mounting bracket, has been upgraded to include improved accuracy, digital calibration, self-diagnostic messaging and shielded cables. The unit is ideal for a variety of commercial or light industrial water filtration systems, such as RO and deionization. The DM-2 was co-designed in the US and South Korea, and is backed by a one-year factory warranty. http://www.tdsmeter.com/products/dm2.html, http://www.hmdigital.com, [email protected]