FAST AND ACCURATE READINGS - Just turn it on, dip in about 1 inch deep of water and read display, Large digital display makes it easy to read.

AUTOMATIC CALIBRATION - No need for any adjustment screwdrivers, just finish the calibration with Auto calibration with 3-5 seconds, Measure total dissolved solids in water(tds),Know exactly when to change water filters.

PORTABLE DESIGN - Handheld pen style and compact carrying case makes it conveniently fits in your pocket or bag and goes anywhere.

WIDE APPLICATION - Ideal for home and laboratory TDS testing applications, including drinking water, swimming pools, aquariums, hydroponics, etc.