DIN 38405-29 Corrigendum 1
German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 29: Spectrometric determination of nitrate with sulfosalicylic acid (D 29); ISO 7890-3:1988, modified; Corrigendum 1
Corrigenda by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/2019