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BS EN 12945:2014+A1:2016

BS EN 12945:2014+A1:2016

$102.76

Liming materials. Determination of neutralizing value. Titrimetric methods

Published By Publication Date Number of Pages
BSI 2016 18
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This European Standard specifies two methods for the determination of the neutralizing value (NV) of liming materials.

Method A is applicable to all liming materials except silicate liming materials.

Method B is applicable to all liming materials.

Both methods do not correctly take into account the potential neutralizing value of material containing more than 3 % P 2O 5. For a more accurate agronomic assessment of products containing more than 3 % P 2O 5 determine the liming efficiency according to EN 14984 .

NOTE

The methods described in ISO 6598 [1] and ISO 7497 [2] can be used for the determination of P 2O 5 content. Further information on P analyses is given in [3] and [4].

PDF Catalog

PDF Pages PDF Title
4 Contents Page
5 European foreword
6 Introduction
7 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
8 6 Apparatus
7 Sampling
8 Procedure
8.1 Preparation of the test sample
9 8.2 Determination
8.2.1 Method A
8.2.1.1 Test portion
8.2.1.2 Titration
8.2.2 Method B
8.2.2.1 Test portion
8.2.2.2 Titration
10 9 Calculation and expression of results for method A and method B
11 10 Precision
10.1 General
10.2 Repeatability
10.3 Reproducibility
11 Test report
12 Annex A (informative) Results of an inter-laboratory trial to determine the neutralizing value
Table A.1 — Repeatability limits and reproducibility limits derived from inter-laboratory trial
13 Annex B (informative) !Conversion tables
16 Bibliography

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BS EN 12945:2014+A1:2016
$102.76