Fluid-filtration receptacle with user-variable semi-permeable drain assembly
AssigneeMillipore Corporation
InventorPhillip Clark
Life of this patent
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Abstract
The present invention provides a fluid-filtration receptacle well-suited for use in centrifugal sample concentration protocols, and particularly, wherein specifiable degrees of sample concentration are sought. Toward this end, the fluid-filtration receptacle is provided with an integral semi-permeable drain capable of being either completely or variably unsealed by a user to allow selective draining of a predetermined corresponding volume of said liquid from said receptacle. The fluid-filtration receptacle is preferably used in combination with a filtrate collection vial. The receptacle fits at least partially within the vial such that liquid (i.e., filtrate) drained from said receptacle collects within said vial.
Claims12
A fluid-filtration receptacle capable of containing a liquid when placed in a predetermined range of operative positions, wherein:
- (a) the receptacle comprises a user-fillable liquid-containable internal area defined by an at least partially-enclosing liquid-impermeable solid material, the liquid-impermeable solid material having a semi-permeable drain disposed therethrough and a seal component releasably-sealing said semi-permeable drain;
- (b) the semi-permeable drain is capable of being either completely or variably unsealed by a user to allow draining of a predetermined corresponding volume of said liquid from said internal area when said receptacle is placed in at least one of said predetermined operative positions;
- and
- (c) informative indicia on or proximate said seal component indicative of the predetermined volume of said liquid drained from said internal area when said semi-permeable drain is unsealed.
A fluid-filtration receptacle capable of containing a liquid when placed in a predetermined range of operative positions, wherein:
- (a) the receptacle comprises a user-fillable liquid-containable internal area defined by an at least partially-enclosing liquid-impermeable solid material, the liquid-impermeable solid material having a semi-permeable drain disposed therethrough and a seal component releasably-sealing said semi-permeable drain;
- and
- (b) the semi-permeable drain comprises a plurality of discrete semi-permeable openings and the seal component comprises a corresponding plurality of independently removable seals, each of said openings capable of being individually and completely unsealed by a user by removal of one of said corresponding plurality of independently removable seals, whereby the semipermeable drain is capable of being variably unsealed to allow draining of corresponding predetermined volumes of said liquid from said internal area when said receptacle is placed in at least one of said predetermined operative positions.
Dependencies are inferred from the claim text.