Chromium (VI)

Photometric test for Hexavalent Chromium in effluents and wastewater

Colour Change: Colourless to Purple
Range:: 0 - 1 mg/L Cr
Technical Resource:: Chromium Test Method, Technical Information
Notes:: Iron above 1 mg/L will cause low results, in which case use two Chromicol No1 tablets with a single Chromicol No2 to increase tolerance to iron

Fill to the 10 mL line with sample.

Use this to "blank" the instrument. Place in cell holder and press Blank.

Prepare sample by adding a Chromicol No1 tablet and crush and stir.

Then, add a Chromicol No2 tablet and crush and stir.

Place in the cell holder and press Measure.

Allow timer to count down 10 minutes. The concentration of Chromium (VI) will then be displayed.