BS ISO 9276-3:2008

1   Scope This part of ISO 9276 specifies methods for the adjustment of an experimental curve to a reference model with respect to a statistical background. Furthermore, the evaluation of the residual deviations, after the adjustment, is also specified. The reference model can also serve as a target size distribution for maintaining product quality. This part of ISO 9276 specifies procedures that are applicable to the following reference models:

a) normal distribution (Laplace-Gauss): powders obtained by precipitation, condensation or natural products (pollens);

b) log-normal distribution (Galton MacAlister): powders obtained by grinding or crushing;

c) Gates-Gaudin-Schuhmann distribution (bilogarithmic): analysis of the extreme values of the fine particle distributions;

d) Rosin-Rammler distribution: analysis of the extreme values of the coarse particle distributions;

e) any other model or combination of models, if a non-linear fit method is used (see bimodal example in Annex C).

This part of [ISO 9276](/search?q=ISO%C2%A09276) can substantially support product quality assurance or process optimization related
  to particle size distribution anal...