1.90 micron stainless steel filter screen 2.Mesh count:1--600 ... :304,304L,316,316L 4.Aperture:0.022-23.37mm 90 micron stainless steel filter screen 1. Materials: sus304, sus304L, sus310 ... , sus316, sus316L, etc. (8% nickel, non-magnetic)2. Weave patterns: Plain Weave, Twill Weave, Plain Dutch ...