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

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, French

Published date

05-01-1984

Publisher

International Organization for Standardization

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.

Committee	ISO/TC 134
DevelopmentNote	Also numbered as BS 5551-4.1.3(1986). (08/2005)
DocumentType	Standard
Pages	5
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
NFU 42 151 : 1984	Identical
IS 6092 : Part 2 : Sec 5 : 2004(R2017)	Identical
BIS IS 6092-2-5 : 2004	Identical

15/30280962 DC : 0	BS ISO 18645 - FERTILIZERS AND SOIL CONDITIONERS - WATER SOLUBLE COMPOUND FERTILIZER - GENERAL REQUIREMENTS
BS ISO 18645:2016	Fertilizers and soil conditioners. Water soluble fertilizer. General requirements
S.R. CEN/TS 15750:2008	FERTILIZERS - DETERMINATION OF DIFFERENT FORMS OF NITROGEN IN FERTILIZERS CONTAINING NITROGEN ONLY AS NITRIC, AMMONIACAL AND UREA NITROGEN BY TWO DIFFERENT METHODS
S.R. CEN/TS 16490:2013	FERTILIZERS - COMPARISON OF THE CEN/TC 260/WG 7 RING TEST RESULTS WITH TOLERANCES GIVEN IN THE REGULATION (EC) NR 2003/2003 ANNEX 2 AND CONCLUSIONS
PD CEN/TS 16490:2013	Fertilizers. Comparison of the CEN/TC 260/WG 7 ring test results with tolerances given in the Regulation (EC) Nr 2003/2003 Annex II and conclusions
ISO 19670:2017	Fertilizers and soil conditioners Solid urea aldehyde slow release fertilizer General requirements
ISO 18642:2016	Fertilizer and soil conditioners Fertilizer grade urea General requirements
EN 15750:2009	Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
CEN/TS 16490:2013	Fertilizers - Comparison of the CEN/TC 260/WG 7 ring test results with tolerances given in the Regulation (EC) Nr 2003/2003 Annex II and conclusions
16/30301947 DC : 0	BS ISO 19670 - FERTILIZERS AND SOIL CONDITIONERS - SOLID UREA ALDEHYDE SLOW RELEASE FERTILIZER - GENERAL REQUIREMENTS
BS ISO 17322:2015	Fertilizers and soil conditioners. Analytical methods for Sulfur Coated Urea (SCU)
UNE-CEN/TS 16490:2016	Fertilizers - Comparison of the CEN/TC 260/WG 7 ring test results with tolerances given in the Regulation (EC) Nr 2003/2003 Annex II and conclusions
DIN EN 15750 E : 2010	FERTILIZERS - DETERMINATION OF TOTAL NITROGEN IN FERTILIZERS CONTAINING NITROGEN ONLY AS NITRIC, AMMONIACAL AND UREA NITROGEN BY TWO DIFFERENT METHODS
BS 4267-0:1987	Ammonium nitrate General introduction
UNE-EN 15750:2010	Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
I.S. EN 15750:2009	FERTILIZERS - DETERMINATION OF TOTAL NITROGEN IN FERTILIZERS CONTAINING NITROGEN ONLY AS NITRIC, AMMONIACAL AND UREA NITROGEN BY TWO DIFFERENT METHODS
ISO 17322:2015	Fertilizers and soil conditioners Analytical methods for Sulfur Coated Urea (SCU)
DIN EN 15750:2010-02	Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
UNI EN 15750 : 2009	FERTILIZERS - DETERMINATION OF TOTAL NITROGEN IN FERTILIZERS CONTAINING NITROGEN ONLY AS NITRIC, AMMONIACAL AND UREA NITROGEN BY TWO DIFFERENT METHODS
BS ISO 18644:2016	Fertilizers and soil conditioners. Controlled-release fertilizer. General requirements
ISO 18645:2016	Fertilizers and soil conditioners Water soluble fertilizer General requirements
BS EN 15750:2009	Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
BS ISO 18642:2016	Fertilizer and soil conditioners. Fertilizer grade urea. General requirements
UNI CEN/TS 16490 : 2013	FERTILIZERS - COMPARISON OF THE CEN/TC 260/WG 7 RING TEST RESULTS WITH TOLERANCES GIVEN IN THE REGULATION (EC) NR 2003/2003 ANNEX 2 AND CONCLUSIONS
ISO 18644:2016	Fertilizers and soil conditioners Controlled-release fertilizer General requirements
BS ISO 19670:2017	Fertilizers and soil conditioners. Solid urea aldehyde slow release fertilizer. General requirements
DD CEN/TS 15750:2008	Fertilizers. Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods
13/30253060 DC : 0	BS ISO 17322 - FERTILIZERS AND SOIL CONDITIONERS - SULFUR COATED UREA (SCU) - ANALYTICAL METHODS
UNI CEN/TS 15750 : 2008	FERTILIZERS - DETERMINATION OF TOTAL NITROGEN IN FERTILIZERS CONTAINING NITROGEN ONLY AS NITRIC, AMMONIACAL AND UREA NITROGEN BY TWO DIFFERENT METHODS
15/30280959 DC : 0	BS ISO 18644 - FERTILIZERS AND SOIL CONDITIONERS - CONTROLLED RELEASE FERTILIZER - GENERAL REQUIREMENTS
CEN/TS 15750:2008	Fertilizers - Determination of total nitrogen in fertilizers containing nitrogen only as nitric, ammoniacal and urea nitrogen by two different methods