Povučen
Preliminary reduction of the iron(III) by hydroxylammonium chloride, if required, suppression of the interference of tin by oxalic acid. Formation of the coloured iron(III)-2,2'-dipyridyl complex in a buffered medium. Photometric measurement of the coloured complex at a wavelength of about 522 nm.
POVUČEN
ISO 3122:1976
95.99
Povučen
27. 5. 2002.
Ispitivanje tehničke borne kiseline - Određivanje sadržaja gvožđa - Fotometrijska metoda
95.99 Povučen