Abstract / scope
The principle consists in dissolution of a test portion, separation of all insoluble matter by filtration of the solution by vacuum through a filter crucible, drying and weighing. Has also been approved by the IUPAC.
ISO 2831:1973Published
Sodium fluoride for industrial use — Determination of water-insoluble matter
Fluorure de sodium à usage industriel — Détermination de l'insoluble dans l'eau