title: Measurement of particle size of free-flowing material with a ring gap sizer.
mesh_terms: D001881:Borates; D002623:Chemistry Techniques, Analytical / Q000295:instrumentation / Q000379:methods*; D005898:Glass; D008853:Microscopy; D010316:Particle Size; D012964:Sodium; D012965:Sodium Chloride
chemical_list: D001881:Borates; D012965:Sodium Chloride; D012964:Sodium