Even though Zinc is nontoxic to human beings, concentrations above 5 mg/L (ppm) 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, US drinking water contains an average of 1.33 mg/L (ppm) of zinc. Zinc is normally introduced into drinking water through industrial effluents, especially due to dezincification of brass and 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.
HI 96731 is supplied with (2) sample cuvettes with caps, 9V battery and instructions. CAL CHECK™ standards and reagents sold separately.
|Range||0.00 to 3.00 mg/L (ppm)|
|Resolution||0.01 mg/L (ppm)|
|Precision||±0.03 mg/L ±3% of reading|
|Light Source||Tungsten lamp|
|Light Detector||Silicon photocell with narrow band interference filter @ 575 nm|
|Method||Adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th ed.|
|Reagents & Standards|
|HI 96731-11||CAL CHECK™ standard cuvettes|
|HI 93731-01||Zinc, Zincon Method (100 Tests)|
|HI 93731-03||Zinc, Zincon Method (300 Tests)|