Testing of ceramic raw and basic materials. Determination of sulfur in powders and granules of non-oxidic ceramic raw and basic materials. Part 1: Infrared measurement methods (ISO 14720-1:2013)
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ISO 14720-1:2013 defines a method for the determination of sulfur in powdered and granular non-oxidic ceramic raw materials and materials, such as silicon carbides, silicon nitrides, graphites, carbon blacks, cokes, carbon powders. If proved by the recovery rate, this method can also be applied for other non-metallic powdered and granular materials, e.g. silicon dioxide. ISO 14720-1:2013 is applicable for materials with mass fractions of sulfur from 0,005 % to 2 %. ISO 14720-1:2013 can also be applied for materials with higher mass fractions of sulfur after verification of the particular case.
Tämän julkaisun valmistelusta Suomessa vastaa Rakennustuoteteollisuus RTT ry, puh. 09 12 991 (vaihde).
Sisällysluettelo
Foreword
1 Scope
2 Principle
3 Apparatus
4 Reagents
5 Sampling and sample preparation
6 Calibration
7 Performance
7.1 Preparation of analysis
7.2 Determination of blank value
7.3 Determination of sulfur content
8 Calculation and report of the results
9 Precision
9.1 Repeatability
9.2 Reproducibility
10 Test report
Annex A Results of the round-robin test (informative)
Annex B Information regarding the validation of the uncertainty of the mean value (informative)
Annex C Commercial Certified Reference Materials (CRM) (informative)