Hanna HI98304 DiST 4 EC Tester - Waterproof High Range Conductivity Meter 0-20 mS/cm camping pump filter Remove the old filter cartridge

Remove the old filter cartridge

Healthy Water — Without the Junk

Designed specifically for the NuvoH2O Home Duo whole-house water softener and filtration system

One is for turning the meter on/off and the other for automatic one point calibration

Replacement parts (OR-250 O-ring

Hanna HI98304 DiST 4 EC Tester - Waterproof High Range Conductivity Meter 0-20 mS/cm camping pump filter Remove the old filter cartridgeThe Hanna Instruments HI98304 DiST 4 is a high range electrolytic conductivity (EC) tester that can measure up to 20. 00 mS cm making it ideal for a variety of applications including water treatment, boilers and cooling towers, agricultural including hydroponics, and general laboratory use. The DiST 4 is a rugged and reliable pocket sized tester for use in the lab or field. This modern looking meter is only 0. 7" thick and extremely ergonomic, fitting