The present invention relates to separation of liquids and gases, more particularly, to disposable cartridge-type filters for purification of milk products. The filter element for fine purification of raw milk is configured as a tubular cartridge made from a food-grade polymeric material. It is formed by discrete rows of aerodynamically extruded fibers whose pore size decreases radially from the periphery towards the center. Each row comprises frame fibers and filter fibers. The filter fibers are thicker than the frame fibers. The invention makes it possible to improve the quality of purification of milk products.