Patent ID: 6599420
Filing Date: 2003-07-29
Classification: B01D

Abstract:
A filter bag comprising:a. a first plastic film; b. a second plastic film having substantially the same size as said first plastic film and sealed to said first plastic film at a first side-peripheral edge, a second side-peripheral edge opposite to said first side-peripheral edge and a bottom peripheral edge thereof to provide a bag with an open-top edge; c. a filter sheet having a length substantially equal to said first and second plastic films and a width smaller than a width of said first plastic film and a width of said second plastic film, said filter sheet having a first longitudinal edge interposed and sealed between said first side-peripheral edge of said first and second plastic films and a second longitudinal edge, opposite to said first longitudinal edge, sealed to an inner wall of said first plastic film at an intermediate position in width of the filter bag, said filter sheet being also sealed to an inner wall of said second plastic film, in vicinity of said first side-peripheral edge, to provide a half-length seam extending from the open-top edge halfway toward the bottom peripheral edge of the filter bag; and d. an interior of said bag being partitioned by said filter sheet into a sample receiving section defined between said first and second plastic films and said filter sheet and a suspension collection section, having a volume smaller than a volume of said sample receiving section, defined between said first plastic film and said filter sheet.