EN 15688:2008
Current
The latest, up-to-date edition.
Fertilizers - Determination of urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) using high-performance liquid chromatography (HPLC)
06-08-2008
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sampling and sample preparation
8 Procedure
9 Calculation and expression of the result
10 Precision
11 Test report
Annex A (informative) Results of the inter-laboratory test
Bibliography
This document specifies a method for the quantitative determination of the urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) content in water-soluble matrices, i.e. urea based fertilizers using high performance liquid chromatography (HPLC).NOTEPure NBPT reference material is required as a standard for the quantitative calibration.
| Committee |
CEN/TC 260
|
| DocumentType |
Standard
|
| PublisherName |
Comite Europeen de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| PN EN 15688 : 2008 | Identical |
| UNE-EN 15688:2009 | Identical |
| SN EN 15688 : 2008 | Identical |
| BS EN 15688:2008 | Identical |
| DIN EN 15688:2008-11 | Identical |
| NF EN 15688 : 2008 | Identical |
| NS EN 15688 : 1ED 2008 | Identical |
| UNI EN 15688 : 2008 | Identical |
| NEN EN 15688 : 2008 | Identical |
| NBN EN 15688 : 2008 | Identical |
| I.S. EN 15688:2008 | Identical |
| ISO 5725-1:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions |
| EN 1482-2:2007 | Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
| EN ISO 3696:1995 | Water for analytical laboratory use - Specification and test methods (ISO 3696:1987) |
| EN 1482-1:2007 | Fertilizers and liming materials - Sampling and sample preparation - Part 1: Sampling |
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