Pacific Sensor Technologies said that the conductivity can determine the level of impurities in water supplies used for both domestic and industrial consumption.

The PAT-7021 water-proof pen tester will feature an IP-57 rated housing which can float on water. It also has an LCD display that can show the four factors simultaneously and a keyboard for calibration.

Pacific Sensor Technologies said that the PAT-7021 water-proof pen tester can be used in the chemical, water treatment, food and beverage, mining and pulp and paper industries.