MEASURING FILTER CUT POINTS AND PORE SIZE DISTRIBUTIONS USING GLASS MICROSPHERES

摘要

In this paper challenge testing with narrow particle size distribution glass microspheres is shown to be a powerful method of measuring both the cut points and pore size distributions of woven stainless steel wire meshes. The key to accuracy and reproducibility was the use of microscopy and image analysis where it was possible to electronically remove any non-spherical particles in the filter calibration standard.