NANOCOLOR® Cobalt

Photometric determination of cobalt
At a pH > 5 cobalt(II) ions react with 4-[5-chloropyridyl-(2)-azo]-m-phenylene diamine (5-Cl-PADAB) to form a pink colour complex which, contrary to other heavy metal complexes, is also stable below pH 5.

Data and ordering information
Cat. No. 918 51
Type standard test 1-51
Range 10 mm cuvette:
0.02 – 0.70 mg/l Co2+
50 mm cuvette:
0.002 – 0.300 mg/l Co2+
Sufficient for 220 determinations
Shelf life at least 2 years
Sea water suitability yes