EN ISO 5398-2:2009
Current
The latest, up-to-date edition.
Leather - Chemical determination of chromic oxide content - Part 2: Quantification by colorimetric determination (ISO 5398-2:2009)
15-01-2009
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Sampling and sample preparation
6 Reagents
6.1 Alkaline fusion method
6.2 Photometric determination
7 Apparatus
8 Methods
8.1 Alkaline fusion method
8.2 Measurement of the aqueous solution
8.3 Preparation of the calibration solution
9 Check of the analytical system
10 Calculation and expression of results
10.1 General
10.2 Repeatability
11 Test report
Annex A (informative) - Determination of water and
other volatile matter
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