TYPICAL COLOUR METALLOCHROMIC INDICATORS IN WATER

Indicator
Form with metal
Free form
Alizarin red S pink yellow
Arsenazo I violet orange
Beryllon II blue violet
Bromo Pyrogallol Red blue red
Gallocyanin blue red
Glycine Thymol Blue blue yellow
Dithizone red green
Diphenylcarbazone violet colorless
Eriochrome Blue Black R (Calcon) pink sky blue
Acid Chrom Blue K pink sky blue
Acid Chrom Blue Black (T) red blue
Xylenol Orange red yellow
Magneson red blue
Methyl Thymol Blue blue yellow
Murexide red, orange violet
Naphthylazoxine yellow red
PAN red yellow
PAR red yellow
Sulfonazo blue violet
Thymolphthalein Complexone blue colorless
Tiron blue colorless
Fluorexon green fluorescence pink
Phthalein Complexone red pink, colorless
Chromazurol S violet yellow
Zincon blue yellow
Eriochrome Red B red yellow
Eriochrome Blue Black B
(alkaline water)
red blue
Eriochrome Blue Black B
(acid water)
blue red
Eriochrome Black T red blue