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BS ISO 18643:2016

BS ISO 18643:2016

$142.49

Fertilizers and soil conditioners. Determination of biuret content of urea-based fertilizers. HPLC method

Published By Publication Date Number of Pages
BSI 2016 24
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This International Standard specifies the test procedure for determination of the biuret content in liquid and solid urea-based fertilizers based on the HPLC method.

PDF Catalog

PDF Pages PDF Title
6 Foreword
7 Introduction
9 1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
10 6 Procedure
6.1 Preparation of test sample
6.2 Preparation of test solution
6.3 Preparation of biuret working standard solutions
6.4 HPLC conditions
11 6.5 Preparation of standard curve
6.6 Determination of the biuret content in the test solution
6.7 Calculation and expression of the results
6.8 Precision
6.8.1 Ring test
12 6.8.2 Repeatability, r 
6.8.3 Reproducibility, R 
7 Test report
13 Annex A (informative) Report of international laboratories ring test
19 Annex B (informative) Alternative method for determination of biuret in fertilizers
20 Bibilography

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BS ISO 18643:2016
$142.49