Resumen
The method consists in ashing of a test portion in a muffle furnace at 525+25 C, treating the ash obtained with hydrochloric acid, neutralizing with ammonia solution and determing of the value using an ammonia/ammonium chloride electrolyte. Copper, tin, lead and cadmium do not interfere.
Informaciones generales
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Estado: PublicadoFecha de publicación: 1986-04Etapa: Norma Internacional confirmada [90.93]
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Edición: 1Número de páginas: 3
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Comité Técnico :ISO/TC 34/SC 3ICS :67.080.01
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