TDS Meters

HM Digital EZ TDS meter tests the TDS (total dissolved solids), which is an indicator of water quality. Product Features Measures TDS Tests TDS (total dissolved solids), an indicator of water quality Water-resistant housing Entire housing resists...

The HM Digital DM-1 in-line dual TDS monitor allows you to monitor both the untreated water and the purified water and compare the two. The TDS, displayed on the LCD screen, is measured up to 9990 ppm, and the meter comes pre-calibrated and ready to use...

HM Digital ZT-2 TDS meter tests the TDS (total dissolved solids), which is an indicator of water quality. This simple and economical TDS meter is great for testing drinking water, aquarium water, aquaculture, and hydroponics. Product Features ...

The HM Digital PM-2 in-line TDS monitor provides TDS monitoring with alarm capabilities. Product Features Monitors TDS Monitors TDS (total dissolved solids) up to 200 ppm Adjustable Set-point Set to trigger at any even number between 2-200. Warning...