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BS EN 15959:2023 – TC:2024 Edition

BS EN 15959:2023 – TC:2024 Edition

$134.27

Tracked Changes. Inorganic fertilizers. Determination of extracted phosphorus P2O5

Published By Publication Date Number of Pages
BSI 2024 35
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This document specifies a method for the determination of phosphorus in fertilizer extracts. The method is applicable to all extracts of fertilizers for the determination of the different forms of phosphorus as phosphorus soluble in mineral acids, water-soluble phosphorus, phosphorus soluble in solutions of neutral ammonium citrate, phosphorus soluble in 2 % citric acid and phosphorus soluble in a mass fraction of 2 % formic acid. The method has only been validated on inorganic fertilizers but can be applicable to all extracted phosphorous if proper extraction methods are used.

PDF Catalog

PDF Pages PDF Title
1 30485188
19 A-30453269
20 undefined
23 European foreword
24 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
25 6 Apparatus and equipment
26 7 Sampling and sample preparation
8 Procedure
8.1 Treatment of the solution
Table 1 — Determination of the aliquot parts of the phosphate solutions
8.2 Hydrolysis
8.3 Weighing the crucible
27 8.4 Precipitation
8.5 Filtering and washing
8.6 Drying and weighing
8.7 Blank test
8.8 Verification
9 Calculation and expression of the result
28 10 Precision
10.1 Inter-laboratory tests
10.2 Repeatability
10.3 Reproducibility
29 Table 2 — Mean values, repeatability and reproducibility limits
11 Test report
30 Annex A (informative) Statistical results of the inter-laboratory tests
Table A.1 — Statistical results extraction according to EN 15956
31 Table A.2 — Statistical results extraction according to EN 15957
32 Table A.3 — Statistical results extraction according to EN 15958
Table A.4 — Statistical results extraction according to EN 15919
33 Bibliography

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BS EN 15959:2023 - TC
$134.27