Hanna Instruments HI 723 Checker HC Handheld Colorimeter for Chromium VI High Range

The HI 723 is a portable meter for measuring High Range Chromium VI ideal for Water Quality. There are two natural forms of ionic chromium, the hexavalent ion, Cr (VI) and the trivalent Cr (III). Cr (III) is much less toxic than Cr (VI) and seldom found in potable waters. Cr (VI), however, is toxic to humans and is found in water. Even though the toxic effects from Cr (VI) in drinking water are not well documented, it is a suspected carcinogen. The maximum permissible level or Cr (VI) allowed to be released into the waterways is 50 ppb. Its level in drinking water is normally much lower and a lever higher than 3 ppb is suggestive of industrial pollution. By monitoring this parameter with the HANNA HI 723 Checker HC, serious health and safety risks can be avoided. The HI 723 Checker HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagent, shake vigurosly for 10 seconds. Minimize