UOP 422 – Particle Size Distribution by Micromesh Sieves
This method is for the determination of particle sizes of fluid cracking catalysts by means of calibrated sieves having uniform precise square openings. It may also be used for determining particle sizes of other powdered materials. The method provides for the classification of particles in a range of sizes from about 20 to 149 microns.
The method is a modification of Shell Development Co. Method EMS 5Z2/61.
