BS ISO 9686:2006
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
07-31-2017
English
05-31-2006
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 General operating instructions
7.2 Test portion
7.3 Blank test
7.4 Calibration
7.4.1 Crucible preparation
7.4.2 Combustion
7.5 Determination
8 Expression of results
8.1 Calculation of mass fractions of carbon or sulfur
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
9 Test report
Annex A (normative) Crucible loading sequence
Annex B (normative) Flowsheet of the procedure for the
acceptance of analytical values for test samples
Annex C (informative) Features of commercial HF
combustion/infrared sulfur analysers
Annex D (informative) Derivation of repeatability and
permissible tolerance equations
Annex E (informative) Precision data obtained by
international analytical trials
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