Reference number
ISO 1619:1976
ISO 1619:1976
© ISO 2024
International Standard
ISO 1619:1976
Cryolite, natural and artificial — Preparation and storage of test samples
Edition 1
1976-09
1976-09
ISO 1619:1976
6216
Publicado
(Edición 1, 1976)
Esta publicación se revisó y confirmó por última vez en 2022.
Por lo tanto, esta versión es la actual.
Resumen
Specifies the procedure for the preparation of crude samples and dried samples and of natural and synthetic materials having a molar ratio sodium fluoride/aluminium trifluoride between 3 and 1,7 approximately. The crude sample is intended for the determination of geometric characteristics, for certain physical and physico-chemical tests and for moisture determination. The dried sample serves especially for chemical tests. The principle of the procedure consists in grinding followed by sieving of the sample until the whole passes through a sieve of mesh aperture 0,125 mm. Thorough mixing and drying at approximately 110 °C.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1976-09Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 2
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Comité Técnico :ISO/TC 226ICS :71.060.50
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