NBN EN ISO 6869 : 2001
Current
The latest, up-to-date edition.
DIERVOEDERS - BEPALING VAN DE GEHALTEN AAN CALCIUM, KOPER, IJZER, MAGNESIUM, MANGAAN, KALIUM, NATRIUM EN ZINK - METHODE MET GEBRUIK VAN ATOMAIRE-ABSORPTIESPECTROMETRIE
12-01-2013
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents and materials
5 Apparatus
6 Sampling
7 Preparation of test sample
8 Procedure
8.1 Detection of presence of
organic matter
8.2 Test portion
8.3 Dry ashing
8.4 Decomposition
8.5 Blank solution
8.6 Determination of copper,
iron, manganese and zinc
8.7 Determination of calcium, magnesium,
potassium and sodium
9 Expression of results
10 Precision
10.1 Interlaboratory tests
10.2 Repeatability
10.3 Reproducibility
11 Test report
Annex A (informative) Results of interlaboratory tests
Bibliography
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