Free Copper 250 Foil
In the Palintest Coppercol method Copper salts are reduced to the cuprous form and then reacted with a 2,2 biquinoline-4,4-dicarboxylic salt to form a purple coloured complex.
This provides a measure of the free Copper ions present in the sample.
In the second stage of the test, a decomplexing agent is introduced and this induces a further reaction with any chelated Copper compounds which might be present.
The reagents are provided in tablet form and the test is simply carried out by adding tablets to a sample of the water.
The intensity of colour produced in the test is proportional to the Copper concentrations and is measured using a Palintest Photometer.