NA 149
DIN Standards Committee Entertainment Technology, Photography and Cinematography
Standards
[Withdrawn]
ISO 6853
ISO 6853
Photography; Processing waste; Determination of ammoniacal nitrogen content; Microdiffusion method
Title (German)
Photographie; Photographische Abwässer; Bestimmung des Ammonium-Stickstoffs; Mikrodiffusionsmethode