BS EN ISO 12677:2011

Foreword
1 Scope
2 Normative references
3 Types of material
4 Principle
5 Apparatus
6 Sample grinding
7 Loss on ignition (and/or drying)
8 Flux
9 Fusion casting procedures
10 Calibration
11 Corrections
12 Reproducibility and repeatability
13 Accuracy determined by certified reference materials
14 Definitions of limits of detection
15 Test report
Annex A (normative) - Calibration range and required detection
        limits
Annex B (normative) - Corrections for tungsten carbide grinding
        media
Annex C (informative) - Examples of fluxes/flux ratios
Annex D (normative) - Examples of CRM to be used to check
        synthetic calibrations
Annex E (normative) - Examples of SeRM
Annex F (normative) - Equation for theoretical calculations
Annex G (normative) - Certified reference materials (CRMs)
Annex H (normative) - Method of inter-element correction
        used to compensate for the effects of co-existing
        components when using SeRM for calibration
Annex I (normative) - Standard deviations achieved with
        certified reference materials
Bibliography

Describes a method for the chemical analysis of refractory and technical ceramic raw materials, intermediates and products, by means of the X-ray fluorescence (XRF) fused cast-bead method.

This International Standard specifies a method for the chemical analysis of refractory and technical ceramic raw materials, intermediates and products, by means of the X-ray fluorescence (XRF) fused cast-bead method. Typical materials that can be analysed by this standard are given in Clause 3. This International Standard is not applicable to non-oxide materials, such as silicon carbides or nitrides, etc. The method is applicable to a wide range of materials containing a wide range of elements.

NOTE 1 The presence of significant amounts of certain elements, such as tin, copper, zinc and chromium, can present difficulties in the fusion process. In this case, the Bibliography can be referred to.

NOTE 2 Constituents at concentrations greater than 99 % (on a dried basis) are reported by difference, provided that all likely minor constituents and any loss on ignition have been determined. These figures can also be checked by direct determination.