Microporous filtration funnel assembly

DETAILED DESCRIPTION What is claimed is: 1.
A filtration funnel assembly comprising an open-ended upper body or reservoir for receiving liquid to be filtered and a lower body or base adapted to telescopically engage with a disengage from said upper body; said upper body having a first rim portion defining an internal shoulder and a second rim portion defining an external shoulder having an inner wall surface; said lower body serving as a conduit for leak-proof axial flow of filtered liquid therethrough comprising an outer wall or shell having an upper rim portion that is telescopically engaged between the internal and external shoulders of said upper body, a transverse filter support connected to said lower body a filter pad supported on said filter support with an annular gasket around said pad, and a filter membrane located on said filter pad; and the rim portion of said external shoulder having locking slot means and said outer wall having tab means with radially outward projection means that forms a lock fit with the locking slot means when the upper and lower bodies are aligned in telescopic engagement.
2.
The assembly of claim 1, wherein the upper rim portion of said outer wall comprises access slot means allowing access therethrough for grasping the edge of the filter membrane for removal of the membrane from the lower body when it is disengaged from the upper body.
3.
The assembly of claim 2, wherein the inner wall surface comprises guide rib means located in circumferential registry with said access slot means when the upper and lower bodies are in telescopic engagement.
4.
The assembly of claim 3 wherein the guide rib means is circumferentially spaced from the locking slot means so as to guidably assist the upper and lower bodies to be correctly placed for joining in interlocking telescopic engagement.
5.
The assembly of claim 1 comprising a diametrically opposed pair of slot means and a matching pair of tab means.
6.
The assembly of claim 1, wherein the upper body and the lower body are generally cylindrical