Patent ID: 8999156
Filing Date: 2015-04-07
Classification: G01N

Abstract:
1. A frit comprising: a porous support structure produced from sintered irregularly shaped powder particles about 45 to 100 micrometers in size, the porous support structure having a media grade between about 0.5 and about 10, and defining a plurality of void spaces; and a plurality of spherical particles no more than about 5 micrometers in size sintered within the porous support structure to each other, to the porous support structure surrounding the void spaces, or both, the spherical particles defining a secondary pore network within the void spaces sufficient to retain packing materials with diameters of less than about 2.5 microns within the frit, wherein the void spaces are filled with the plurality of spherical particles such that the frit has a density of at least 50% by volume.