International Standard
ISO 5315:1984
Fertilizers — Determination of total nitrogen content — Titrimetric method after distillation
Reference number
ISO 5315:1984
Edición 1
1984-05
International Standard
Vista previa
ISO 5315:1984
11322
No disponible en español
Publicado (Edición 1, 1984)
Esta norma se revisó y confirmó por última vez en 2023. Por lo tanto, esta versión es la actual.

ISO 5315:1984

ISO 5315:1984
11322
Idioma
Formato
CHF 42
Convertir Franco suizo (CHF) a tu moneda

Resumen

The method consists in reducing of nitrate to ammonia by chromium powder in acid medium, converting of organic and urea nitrogen into ammonium sulfate by digestion with concentrated sulfuric acid in the presence of a catalyst, distilling of the ammonia from an alkaline solution and absorbing in an excess of standard volumetric sodium hydroxide solution. The method is not recommended for materials containing more than 7 % of organic matter.

Informaciones generales

  •  : Publicado
     : 1984-05
    : Norma Internacional confirmada [90.93]
  •  : 1
     : 5
  • ISO/TC 134
    65.080 
  • RSS actualizaciones

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