BS ISO 13292:2006

Foreword
1 Scope
2 Normative references
3 General requirements and recommendations
4 Sampling and sample processing methods
  4.1 Sampling
      4.1.1 General
      4.1.2 Checking bias in mechanical sampling
      4.1.3 Checking difference between sampling at
            different locations
  4.2 Sample processing and analysis
5 Analysis of experimental data
  5.1 Statistical basis
  5.2 Determination of the mean difference and its standard
      deviation
  5.3 Determination of the required number of data sets
  5.4 Statistical test
Annex A (informative) - Numerical examples of determining
        the bias of sampling
Bibliography

Describes methods for checking whether there is any bias in the sampling of copper, lead, zinc and nickel concentrates, where the sampling is carried out in accordance with the methods specified in ISO 12743.

This International Standard specifies methods for checking whether there is any bias in the sampling of copper, lead, zinc and nickel concentrates, where the sampling is carried out in accordance with the methods specified in ISO12743. These methods can also be used for comparing alternative sampling regimes, checking whether there is any bias in sample processing and for checking possible significant differences in sampling at different places, e.g. at loading and discharge points, or the analysis of exchange samples. Numerical examples are given in AnnexA.