ISO 9276-3:2008 PDF

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 can substantially support product quality assurance or process optimization related to particle size distribution analysis.

ISO 9276-3:2008 Referenced Document

ISO 9276-2 Representation of results of particle size analysis - Part 2: Calculation of average particle sizes/diameters and moments from particle size distributions*， 2014-05-01 Update
ISO 9276-5 Representation of results of particle size analysis - Part 5: Methods of calculation relating to particle size analyses using logarithmic normal probability distribution

2008 ISO 9276-3:2008 Representation of results of particle size analysis - Part 3: Adjustment of an experimental curve to a reference model