Water quality analyzer with multi-parameters is a new type water quality monitor with multi-parameters and broad measurement range. It can be applied to the online or portable monitoring of the quality of different water bodies like surface water, underground water, source water, wastewater, drinking water and sea water.
Chromium is a metal with silver luster, nontoxic and stable chemical property. Stainless steel contains more than 12% chromium. Common chromium compounds include hexavalent chromic anhydride, potassium dichromate, sodium dichromate, potassium chromate and sodium chromate; trivalent chromium sesquioxide (chrome green, Cr2O3); and bivalent chromium oxide. In the chromium compounds, the hexavalent chromium is the most toxic and tervalent chromium takes the second place.
Nickel is a metallic element with approximate silver white, hard, malleable and erromagnetic features. It can be highly polished and is resistant to corrosion. When it is dissolved in the nitric acid liquid, the solution turns to green. It is mainly used in alloy (such as nickel steel and nickel silver) and as catalyst.
