HM Digital PM-2 In-Line TDS Alarm Monitor
$79.99
Description
HM Digital PM-2 In-Line TDS Alarm Monitor.Monitors TDS (total dissolved solids) up to 200 ppm..Warning light. Light turns on when TDS levels reached pre-programmed level..Great for use with RO/DI aquarium filters AND reverse osmosis drinking water systems to monitor your membrane efficiency and help determine when it's time to change the membrane.
