SINTERED METAL FIBER DISKS FOR CHROMATOGRAPHIC APPLICATIONS

摘要

A chromatography column has an upstream frit made of non-woven, metal fibers sintered to form a depth filter having graded interstitial passages increasing in size in the direction of flow through the column during use. The frit is held in the column or in a recess of an end fitting, insert or PEEK holder. An annular PEEK ring seals at least one face of the frit at a peripheral edge of the frit, and preferably seals both faces at that edge.