ISO 3428:1976Withdrawn

Sodium fluoride for industrial use — Preparation and storage of test samples

Fluorure de sodium à usage industriel — Préparation et conservation des échantillons pour essai

Abstract / scope

Relates to crude samples intended for the determination of moisture content and dried samples for chemical tests. Processing by grinding and sieving until the sample passes completely through a sieve of mesh aperture 0.125 mm. Thoroughly mixing and drying and storing in a tightly closed container.