Home

Subscribe to updates

ISO 5315:1984

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

This standard has been reviewed and then confirmed in 2012 
More information

ISO standards are reviewed every five years

Close

Media and price

Format Price Language
PDF CHF 38,00 Add to basket
Paper CHF 38,00 Add to basket

 

Abstract

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.

 

  • Edition: 1 (Monolingual) ICS: 65.080
    Status: Published Stage: 90.93 (2012-05-05)
    TC/SC: ISO/TC 134 Number of Pages: 5
  • No revision information available

  • No corrigenda or amendments available

Preview and follow ISO 5315:1984 on our Online Browsing Platform

Preview


Contact customer services

Send your enquiry by email
or call us on +41 22 749 08 88
09:00 – 12:30, 14:00 – 17:00 (UTC+1).

Related standards

Standards in the same category (65.080)
Standards from the same committee