Performance of PARI eFlow~R

摘要

I am somewhat disturbed by the methodology in the recent publication by Rottier et al. discussing the performance of the PARI eFlow Rapid and the PARI LC Plus. For example, they used laser diffraction with the Fraunhofer theory for particle sizing and found the differences between their results and other previously published results "cannot be explained easily." I would beg to differ. The Fraunhofer theory is very appropriate for opaque particles such as coal dust but not for transparent spheres or droplets. Joylon Mitchell, in his extensive (as one would expect from Jolyon) and excellent review of laser diffraction particle sizing/ points out that the correct theory for transparent spheres is the Mie theory. If Rottier and colleagues recalculate their data using the Mie theory, I am fairly certain that they will find similar results for MMD as have been found by others.