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SSH ISO 5315:1984

Fertilizers — Determination of total nitrogen content — Titrimetric method after distillation

Oct 31, 2011

General information

60.60     Oct 31, 2011

DPS

DPS/KT 47

International Standard

65.080  

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Scope

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.

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PUBLISHED
SSH ISO 5315:1984
60.60 Standard published
Oct 31, 2011

Related project

Adopted from ISO 5315:1984