Even though zinc is nontoxic to human beings, concentrations above 5 mg/L can cause a bitter, astringent taste. This level of zinc can result in a milky, iridescent color in alkaline waters and irritate the human digestive system. Zinc in low quantities, however, is a beneficial and essential element necessary for body growth. In fact, the US drinking water contains an average of 1.33 mg/L of zinc. Zinc is normally introduced into drinking water through industrial effluents, especially due to zinc leaching from brass & deterioration of galvanized iron. In addition to drinking water, zinc is measured in surface finishing, boilers and cooling towers, water conditioning, effluent waters and many other applications. The HANNA instruments^® solution to the measurement of this important parameter is a handy, portable meter that measures zinc from 0 to 3 mg/L in steps of 1/100th of mg/L. The meter is microprocessor-based to guarantee maximum accuracy and all readings are shown in clear digits on a large LCD display.

HI 93731 is supplied with 2 cuvets, battery and instructions.