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BS ISO 17319:2015

BS ISO 17319:2015

$142.49

Fertilizers and soil conditioners. Determination of water-soluble potassium content. Potassium tetraphenylborate gravimetric method

Published By Publication Date Number of Pages
BSI 2015 28
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This International Standard specifies a gravimetric method for the determination of the water-soluble potassium content of test solutions of fertilizers. It is suitable for use in arbitration and for reference purposes.

This International Standard is applicable to those fertilizers containing more than 1,0 % K2O or equivalent amount of K content.

PDF Catalog

PDF Pages PDF Title
6 Foreword
7 1 Scope
2 Normative references
3 Principle
4 Reagents
8 5 Apparatus and materials
6 Test solution
7 Procedure
7.1 Aliquot portion of test solution
7.1.1 Procedure in the presence of cyanamide and/or organic materials
9 7.1.2 Procedure in the absence of cyanamide and/or organic materials
7.2 Determination
7.3 Blank test
7.4 Periodic quality control
8 Expression of results
8.1 Calculation
10 8.2 Precision
8.2.1 Ring test
8.2.2 Repeatability, r
8.2.3 Reproducibility, R
9 Test report
11 Annex A (informative) Report of Method Accuracy
19 Annex B (informative) Interlaboratory testing
25 Bibliography

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BS ISO 17319:2015
$142.49