microtest® Test Kit Specifications

microtest Copper CZ

Colorimetric Test for


0.0 – 4 mg/L Cu2+

Product Code655000
ContentsReagent A, 15 mL
Reagent B, 10 mL
Cuvette, 4 mL
Colour chart
Analytical MethodCuprizon: At the pH of ca. 9 copper ions (Cu2+) form a blue complex with cuprizon (Bis(cyclohexanone)oxaldihydrazone). The intensity of its colour is related to the copper concentration.
Number of Tests70
InterferencesThis test is suitable for freshwater and seawater. Strongly alkaline or acidic samples have to be neutralised before testing. Iron concentrations of greater than 10 mg/L will cause the formation of a brown colour after adding the Buffer.
Measuring RangeThe standard measuring range is 0.0 – 4 mg/L. The colour comparator has 6 colour fields: 0–0.2–0.5–1–2–4 mg/L. For higher copper concentrations, the sample has to be diluted. A 1:4 sample dilution can be carried out easily, thus extending the measuring range to 16 mg/L.
Shelf Life2 years
ApplicationsDetermination of copper in drinking water; monitoring of copper corrosion; determination of copper concentrations in water storage systems for the control of algae growth; copper in industrial waste water, e.g. from electroplating.