Abstract / scope
A test portion is evaporated in a tared platinum dish and the residue is weighed after drying at 105 2 °C. The method is applicable to solutions containing not more than 35 % (m/m) ammonia.
ISO 7109:1985Published
Ammonia solution for industrial use — Determination of residue after evaporation at 105 degrees C — Gravimetric method
Ammoniaque à usage industriel — Détermination du résidu après évaporation à 105 degrés C — Méthode gravimétrique