The Pocket Conductivity Tester is a rugged and reliable pocket-sized tester that offers quick and accurate readings of conductivity and is ideal for testing in the field and the laboratory.This tester features an amperometric graphite electrode that provides better repeatability in measurements since it does not oxidise. The HI-98303's non-oxidising graphite pins are able to provide an optimal surface for accurate dependable results.Ideal for testing:Drinking waterWater conditioningReverse osmosis