Hanna HI98304 EC Meter

The HI98304 DIST4 EC Tester (0.00 to 19.99 mS/cm) is used to measure conductivity in drinking water, water conditioning, reverse osmosis, cooling towers, wastewater, laboratories, agriculture, aquaculture and aquariums, hydroponics, and the printing industry. It is a robust, accurate meter that fits in a pocket, offering fast and accurate conductivity readings. These meters feature an amperometric graphite electrode that provides better repeatability in measurements as it does not oxidize. An amperometric EC/TDS measurement is based on Ohm's Law, I = V/R, where R depends on the distance between two pins and their surface. Oxidation changes both the distance and the surface, which will affect accuracy. The non-oxidizing graphite pins in the DiSTs are able to deliver an optimal surface for accurate and reliable results. When calibration is required, simply immerse the electrode tip into the calibration solution and adjust the potentiometer on the side of the meter. An easily removable cap allows for simple battery replacement. The battery life is approximately 250 hours of continuous use, so it is easy to guess that this replacement will not happen many times.