DIN 38409-20:1989
German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of substances that react with disulfine blue (H 20)
- Standard No.
- DIN 38409-20:1989
- Release Date
- 1989
- Published By
- German Institute for Standardization
- Latest
- DIN 38409-20:1989
- Scope
- The standard describes a method for the determination of the disulfine blue active substances (softeners) in water. The cationic surfactants are isolated and enriched and the extinction is to measure at 628 mm.
DIN 38409-20:1989 history
- 1989 DIN 38409-20:1989 German standard methods for the examination of water, waste water and sludge; parameters characterizing effects and substances (group H); determination of substances that react with disulfine blue (H 20)
