Orientation effects in the evaluation of populations of irregularly shapedparticles by image analysis

Three different powders were studied by image analysis. Shadow casting was used to generate information on particle orientation. It was discovered tha t orientation effects can distort the data generated in size characterizati on studies and as a consequence of these studies it is suggested that, in a ny image analysis study intended to be used to generate reference data, sha dow casting-orientation studies should be carried out to specify the orient ation of the fineparticles.