DIN 38405-52 E:2018-10 German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 52: Photometric determination of dissolved chromium(VI) in water (D 52)
2020DIN 38405-52:2020 German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 52: Photometric determination of dissolved chromium(VI) in water (D 52)
1970DIN 38405-52 E:2018-10 German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 52: Photometric determination of dissolved chromium(VI) in water (D 52)