ISO-5314 › Fertilizers - Determination of ammoniacal nitrogen content - Titrimetric method after distillation
ISO-5314
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1ST EDITION
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CURRENT
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The method consists in distilling of the ammonia from an alkaline solution, absorbing in an excess of standard volumetric sulphuric acid solution and back-titrating with standard volumetric sodium hydroxide solution. It is applicable only in the absence of urea or its derivatives, of cyanamide and of organic nitrogenous compounds.
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65.080 (Fertilizers Including soil conditioners and culture medium)
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Document Number
ISO 5314:1981
Revision Level
1ST EDITION
Status
Current
Publication Date
May 15, 1981
Committee Number
ISO TC 134/SC 4