LABORATORY FILTER Russian patent published in 2001 - IPC

FIELD: separation of liquid from solid agent; check of liquids for presence of solid particles. SUBSTANCE: laboratory filter includes funnel connected with housing, drain grate whose edge is bent inside housing, paper filter laid on grate, receiving reservoir which is hermetically connected with housing and vacuum system; housing is provided with circular recess in which additional gasket is laid via peripheral part of paper filter; this gasket is in contact with bottom of funnel; edge bead of drain grate is received by circular recess of housing between its side surface and side surface of gasket adjoining it; grate is made from woven metal material. EFFECT: reduced hydraulic resistance of drain grate; enhanced reliability of check; simplified construction. 4 cl, 2 dwg