BS ISO 14411-2:2020
$142.49
Preparation of particulate reference materials – Polydisperse spherical particles
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 26 |
This document describes the specifications for spherical polydisperse particulate reference materials with acceptable uncertainty in particle size distribution and describes protocols for their characterization. One potential use of these reference materials is the reliability test of the laser-diffraction instruments and other particle sizing methods.
This document expresses polydispersity and the related uncertainties in size. Small variations in size can imply large variations in cumulative distribution.
This document describes the requirements of particulate reference materials, which are intended to be used to test the reliability of various types of particle size measurement apparatus. The requirements for processing, homogeneity and stability assessment as well as for the preparation of certificates, which are not addressed in this document are described in ISO 17034.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms, definitions and symbols 3.1 Terms and definitions |
| 10 | 3.2 Symbols |
| 11 | 4 Requirements for preparing polydisperse particles 4.1 General description of a project for the production of a reference material |
| 12 | 4.2 Requirements on the general properties of the material for polydisperse particles 4.3 Size distribution for polydisperse particles |
| 13 | 5 Characterization of polydisperse particles 5.1 Particle size distribution 5.2 Aspect ratio 5.3 Apparent particle density 5.4 Refractive index 6 Estimation of size measurement uncertainties 6.1 Uncertainty from sampling 6.1.1 Uncertainty of the average value N replicate measurement |
| 14 | 6.1.2 Uncertainty of a single measurement |
| 15 | 6.2 Other uncertainty factors 6.3 Expanded uncertainty of size distribution |
| 16 | Annex A (informative) Example calculation of the uncertainty estimation of particle size distribution determined by N replicate measurement |
| 19 | Annex B (informative) Example calculation of the uncertainty estimation of number-based particle size distribution determined by a single measurement |
| 22 | Annex C (informative) Example calculation of the uncertainty estimation for a volume-based cumulative size distribution transformed from the number-based size distribution having a log-normal size distribution |
| 24 | Bibliography |
