Patent ID: 6511606
Filing Date: 2003-01-28
Classification: B01D

Abstract:
A simple, economical and rapid method for determining if the contaminate particle size appearing in a relatively large amount of fluid to be filtered is acceptable, by filtering only a relatively small sample thereof, comprising the steps of:A. providing a pressurized filter housing vessel having an input port and an output port; B. providing a filter basket adapted to be received by said filter housing vessel; C. providing a multi-layered laminated filter bag, each layer of filter material having a different porosity rating, adapted for insertion into said filter basket; D. permitting a sample of said fluid to be filtered, to flow through said filter bag under pressure; E. removing said multi-layered laminated filter bag from said filter vessel housing after said fluid has flowed therethrough; and F. cutting said multi-layered laminated filter bag at an angle to the longitudinal axis of said filter bag to determine, by a non-assisted naked eye visual examination, the layer of said filter material that has trapped the major portion of said contaminating particles.