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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Direct reduced iron. Determination of carbon and/or sulfur. High-frequency combustion method with infrared measurement
Hardcopy , PDF
English
31-05-2006
31-07-2017
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
Specifies a method for the determination of the mass fraction of carbon and/or sulfur in direct reduced iron by infrared measurement after high-frequency combustion.
| Committee |
W/-
|
| DevelopmentNote |
Supersedes 05/30116677 DC. (05/2006)
|
| DocumentType |
Standard
|
| Pages |
22
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
| Standards | Relationship |
| ISO 9686:2006 | Identical |
| ISO 10835:2007 | Direct reduced iron and hot briquetted iron — Sampling and sample preparation |
| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 7550:1985 | Laboratory glassware — Disposable micropipettes |
| ISO 7764:2006 | Iron ores — Preparation of predried test samples for chemical analysis |
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