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AS 5009.1-2003
[Current]Determination of particle size distribution by centrifugal liquid sedimentation methods, Part 1: General principles and guidelines
Sets out methods for determining the particle size distributions of particulate materials, typically in the size range 0.1 µm to 5 µm, by centrifugal sedimentation in a liquid. The methods of determining the particle size distribution described in this part of ISO 13318 are applicable to slurries, particulate materials which can be dispersed in liquids and some emulsions. A positive density difference between the discrete and continuous phases is necessary, although centrifugal photosedimentation can be used for emulsions where the droplets are less dense than the liquid in which they are dispersed. This Standard is identical with and has been reproduced from ISO 13318-1:2001.
Published: 10/04/2003
Pages: 16
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
2 Normative references
3 Terms, definitions and symbols
3.1 Terms and definitions
3.2 Symbols
4 Principles
4.1 General
4.1.1 Line-start incremental method
4.1.2 Homogeneous suspension incremental method
4.2 Calculation of particle size
4.2.1 Line-start method
4.2.2 Homogeneous suspension method
4.2.3 Homogeneous suspension method with scanning
4.3 Calculation of cumulative mass percentage
4.3.1 General
4.3.2 Line-start
4.3.2.1 Photosedimentation method
4.3.3 Homogeneous suspension
4.3.3.1 Photosedimentation method
4.3.3.2 Centrifugal X-ray method
4.3.3.3 Radial dilution correction
4.3.4 Homogeneous suspension with scanning
5 Particle size, shape and porosity limitations
5.1 Upper size limit
5.2 Lower size limit
5.2.1 Effect of thermal diffusion (Brownian motion)
5.3 Particle shape
5.4 Particle porosity
6 Test conditions
6.1 Temperature
6.2 Concentration of suspension
7 Sampling
8 Preparation for a sedimentation analysis
8.1 Density of liquid and particles
8.2 Removal of oversize particles
8.3 Selection of suspending liquid
8.4 Dispersion of sample
9 Tests in duplicate and validation
9.1 Tests in duplicate
9.2 Validation
10 Reporting of results
Annex A
Annex B
Bibliography
Cited references in this standard
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