Numéro de référence
ISO 7104:1985
ISO 7104:1985
© ISO 2024
ISO 7104:1985
Ammoniac anhydre liquéfié à usage industriel — Dosage de l'eau — Méthode par chromatographie en phase gazeuse
Edition 1
1985-08
1985-08
Annulée
Résumé
The water present in a sample is tranformed into acetylene by reaction with calcium carbide. The acetylene formed is determined by gas chromatography using an external standard consisting of a standard gas mixture with an inert gas, containing a known amount of acetylene. The method is applicable to products having water contents between 5 mg/kg and 3000 mg/kg.