BS ISO 9683-1:2006
Current
The latest, up-to-date edition.
Hardcopy , PDF
English
30-04-2007
Foreword
1 Scope
2 Normative references
3 Principle
4 Reagents
5 Apparatus
6 Sampling and samples
6.1 Laboratory sample
6.2 Preparation of predried test samples
7 Procedure
7.1 Number of determinations
7.2 Test portion
7.3 Blank test and check test
7.4 Determination
7.4.1 Decomposition of the test portion
7.4.2 Colour development and extraction
7.4.3 Spectrophotometric measurement
7.4.4 Calibration
8 Expression of results
8.1 Calculation of mass fraction of vanadium
8.2 General treatment of results
8.2.1 Repeatability and permissible tolerance
8.2.2 Determination of analytical result
8.2.3 Between-laboratories precision
8.2.4 Check for trueness
8.2.5 Calculation of final result
8.3 Oxide factor
9 Test report
Annex A (normative) Flowsheet of the procedure for the
acceptance of analytical values for test samples
Annex B (informative) Derivation of repeatability and
permissible equations
Annex C (informative) Precision data obtained by
international analytical trials
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