Abstract / scope
The principle of the method is based on burning a test portion and heating at (600 30) °C to constant mass. - ISO 1391, Parts 1 to 4, replace ISO Recommendation R 1391-1970.
ISO 1391-2:1976Withdrawn
Paraformaldehyde for industrial use — Methods of test — Part 2: Determination of ash
Paraformaldéhyde à usage industriel — Méthodes d'essai — Partie 2: Détermination des cendres