HM Digital SM-1 In-Line TDS Monitor - Single Line Digital Water Quality Meter conductivity meter Mineral Stones: Replace every 2

Mineral Stones: Replace every 2 years

Works on time (and volume for the FM-2) for up to five stages (can be less)

78 contaminants are associated with brain and nervous system damage

It is easy to use with simple two button operation and fast with a response time under 2 seconds

HM Digital SM-1 In-Line TDS Monitor - Single Line Digital Water Quality Meter conductivity meter Mineral Stones: Replace every 2SM 1: In line Single TDS Monitor The SM 1 is provides an easy to read single line TDS monitor that provides a digital readout. It is ideal for any water filtration system, including reverse osmosis systems, coolers and much more. FEATURES: Displays TDS level of a single water line Efficient and accurate Auto Off function conserves battery power. (Shuts off automatically after 10 minutes of non use) Factory Calibrated: our meters are calibrated with a