6-hydroxy-5-(4-sulfophenyl)azo-2-naphthalenesulfonic acid measurement
6-hydroxy-5-(4-sulfophenyl)azo-2-naphthalenesulfonic acid measurement
6-hydroxy-5-(4-sulfophenyl)azo-2-naphthalenesulfonic acid measurement
6-hydroxy-5-(4-sulfophenyl)azo-2-naphthalenesulfonic acid measurement