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Measurement of Particle Size and Shape, some Reflections on the BCR reference material programme
Author(s) -
Scarlett Brian
Publication year - 1985
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19850020101
Subject(s) - characterization (materials science) , representation (politics) , particle size , particle (ecology) , process (computing) , certification , volume (thermodynamics) , mathematics , computer science , materials science , physics , optics , chemistry , thermodynamics , geology , political science , law , operating system , oceanography , politics
There are three basic philosophies which may be taken towards the problem of calibrating particle size measuring techniques. The first is to assume a model of the process and that the technique is thus absolute. The second is to calibrate an instrument using the particles which are to be measured themselves. In this paper, these three approaches are compared and contrasted. As an example, the programme of certification of the BCR samples is cited and discussed. The paper then advocates the use of the equivalent volume diameter as the basic particle size characterization and its combination with other measurements as shape determinations. The representation of both size and shape in this way is conveniently presented in the form of orthogonal diagrams.