Abstract: A filter comprises a filter cartridge located within a housing. Fuel flows through a filter medium of the cartridge, in use, from an outer chamber to an inner chamber. From the inner chamber, the fuel flows over and around a sedimentation baffle located within a sedimentation chamber. Fuel exits the sedimentation chamber through an outlet passage, an air collection chamber being arranged to collect air from the flow of fuel. Air exits the air collection chamber via openings.

Abstract: The vacuum filtration device has a disposable filter funnel and a disposable filtrate receptacle. The funnel and receptacle are used with a reusable base that is connected to a vacuum source. When the receptacle and funnel are mounted on the base the vacuum is applied through a connecting passage to the receptacle to draw the filtrate from the funnel into the receptacle.

Abstract: An in-line liquid filtration device useable for filtration of blood, blood products or the like includes a housing having an inlet port, an outlet port, at least one filter element disposed in the housing between the inlet port and outlet port so as to filter liquid which flows into the filtration device via the inlet port. The filter element divides the housing into a first chamber and a second chamber. The device allows gases to vent the filtration device through the outlet port. The means may include a flow deflector within the first chamber and/or the second chamber. The means may also include a channel, preferably spiral, within either the first chamber and/or second chamber. The filtration device allows air therein to be purged downstream into either an air collecting bag or into the blood receiving bag without the manipulation of the height of the filtration device or the blood receiving bag.

Abstract: A small filter cartridge is particularly adapted to be attached to the neck of a conventional plastic soft drink bottle to filter contaminated water contained in the bottle by passing the water through the filter as it is discharged from the bottle. The flexible bottle walls are squeezed to pressurize the water and facilitate flow through the filter element. The filter includes a uniquely positioned check valve which allows pressure equalization of the bottle interior in a simple and efficient manner. The filter is attached directly to the neck of the bottle and embodiments are disclosed in which the element is inserted completely within the bottle and mounted entirely outside the bottle.

Abstract: An oil filter including a filter housing, a cover and a filter element arranged within the filter housing and provided with an outlet channel which is closed by a seal when the cover is in a closed position and which allows oil situated in the filter housing to run out into a collecting tank when the cover is opened.

Abstract: A fecal parasite concentrator which has a cylindrical body (20) with connections for a sample vial (24) on one end having a protective recess (27) for receiving the sample vial and a centrifuge tube (28) on the other. An integral filter (36) is disposed within the body at right angles coaxially covering the cross sectional area of the hollow body. The filter contains a series of closely spaced square openings for filtration of a liquid diluted fecal specimen. A hollow stem (40) with truncated end (44) extends upwardly from the filter having orifices (46) which permit air to pass therethrough when the diluent specimen flows through the filter.

Abstract: The filtration method involves processing biological liquid from an enclosed flexible supply bag to a filtration media within a processing system wherein the flow of biological liquid within the system is restricted to allow the biological liquid to back up above the level of a port located upstream within the system and preventing gas from entering into the processing system through the port by maintaining the level of biological liquid above the port until the flow of biological liquid from the flexible supply bag ceases. The system automatically allows gas to enter into the system through the port when the flow of biological liquid ceases thereby draining the biological liquid into a receiving bag. The flow may be restricted by a narrow cross-sectional area within the processing system and the port may be covered by a hydrophobic filter media.

Abstract: A self-purifying filter apparatus comprising (1) a filter having a first surface and a second surface; (2) flow control means, such as a vacuum pump, for causing a stream of fluid interspersed with solid particulates to pass from the first surface to the second surface through the filter, thereby removing some of the solid particulates from the first stream of fluid and depositing them on the first surface; and (3) a purging device, such as a small reservoir of water (potentially formed, in part, by water previously filtered by the filter), for causing a second stream of fluid to pass from the second surface to the first surface through the filter without substantially changing the position of the filter, thereby rinsing and removing from the first surface at least some of the solid particulates that were deposited there.

Abstract: A fuel filter assembly employs a hand primer and a disposable filter cartridge mounted to a filter base. The filter cartridge and filter base define a fuel flow path through the filter assembly. The filter base includes a sump for receiving fuel that has traversed the filter element. The hand primer includes a deformable member composed of an elastomeric material that cooperates with a base plate to define a cavity. The base plate is disposed intermediate the deformable member and the base sump to separate the cavity from the fuel flow path. The base plate has a plurality of orifices to selectively provide fluid communication between the cavity and the sump. A discharge passage in fluid communication with cavity provides means for discharging air from the fuel filter assembly.

Abstract: An air gap adapter for use with a water faucet. The air gap adapter has an adapter body with a base portion and an integral riser portion which extends generally vertically upwardly from a rear region of the base portion. The base portion has a hole for a water inlet shank of the water faucet, and the riser portion has brine inlet and outlet bores. The brine outlet bore is vertically oriented in the riser portion, and the brine inlet and outlet bores are open at their upper region. Two barbed connectors are located at a lower region of the adapter body and provide a brine inlet and outlet to the adapter. A venting aperture is formed near an upper region of said riser portion and passes into the brine outlet bore. A cap is positioned on the riser portion above the bores.

Abstract: Biological fluid processing assemblies having a gas inlet and/or a gas outlet are disclosed.

Abstract: A simple, self-supporting cardiotomy filter/defoamer is formed by a 20 .mu.m cylindrical spray spun hollow plastic filter cartridge impregnated with an anti-foaming agent.

Abstract: A device for separating gas bubbles out of medical fluids, in particular blood, has a substantially cylindrical chamber, an inlet connection arranged in the longitudinal direction of the chamber, an outlet connection and a flow-guide member attached to the inlet connection and having a plurality of flow channels, which extend in a space curve out of the longitudinal direction of the chamber in a direction running substantially tangential to the inner wall of the chamber. An orifice, which is sealed by a hydrophobic membrane, is provided in the cover part of the chamber. Since the outlet orifices of the flow channels are arranged directly underneath the cover part, the membrane is circumflowed by the inflowing fluid, avoiding the formation of dead zones. The device makes it possible to separate out air bubbles with a substantial degree of reliability, without the danger of the hydrophobic membrane becoming obstructed from contact with the blood.

Abstract: A blood reservoir for the treatment and collection of blood from two different sources. The blood reservoir has a filter/defoamer core assembly comprised of a support structure disposed within an outer defoamer. A separator with an opening is located in the support structure, dividing the support structure into a first and second portions. A depth filter is located within the first portion of the support structure. The first portion of the support structure with the depth filter forms a cardiotomy blood chamber and the second portion with no depth filter forms a venous blood chamber. This filter/defoamer core assembly is placed within a clear outer shell which forms the reservoir. This outer shell has a cover with a venous blood inlet and plurality of cardiotomy inlets. The cardiotomy inlets are in fluid communication with the cardiotomy blood chamber.

Abstract: The present invention provides a blood filter comprising a housing having a top portion, a base portion and a sidewall portion and a blood inlet. A filter element is disposed within the housing and divides the housing into an inlet chamber in flow communication with the blood inlet and an outlet chamber. The filter element comprises a portion of non-woven filter material and a portion of screen filter material and both the non-woven filter material portion and the screen filter material portion are in contact with the inlet chamber and the outlet chamber. The housing also comprises a blood outlet in flow communication with the outlet chamber.

Abstract: A combined cardiotomy and venous blood reservoir according to a preferred embodiment of the invention provides a separate in-flow path for both cardiotomy fluid and for venous blood, and includes a cardiotomy fluid filter element also serving as an initial de-foamer. The cardiotomy fluid is de-foamed, filtered, and again de-foamed. The venous blood is de-foamed, and then both fluids are combined for flow from the reservoir. The filter area provided for cardiotomy fluid is advantageously separated from the area of a final de-foamer element. Thus, both the cardiotomy fluid and venous blood may flow through this final de-foamer element simultaneously along separate flow paths. The reservoir design provides greater freedom in selecting adequate filter area for the cardiotomy fluid, while allowing the selection of effective de-foamer element areas in order to achieve acceptable flow rates for both cardiotomy fluid and for venous blood under various conditions of operation for the reservoir.

Abstract: An in-line liquid filtration device useable for filtration of blood, blood products or the like includes a housing having an inlet port, an outlet port, at least one filter element disposed in the housing between the inlet port and outlet port so as to filter liquid which flows into the filtration device via the inlet port. The filter element divides the housing into a first chamber and a second chamber. The device allows gases to vent the filtration device through the outlet port. The means may include a flow deflector within the first chamber and/or the second chamber. The means may also include a channel, preferably spiral, within either the first chamber and/or second chamber. The filtration device allows air therein to be purged downstream into either an air collecting bag or into the blood receiving bag without the manipulation of the height of the filtration device or the blood receiving bag.

Abstract: A method of manufacturing a fluid filter comprising: (a) providing a cone having a tip end and an open end and made of a filter material; (b) providing a support element having a plurality of concentric annular members mounted on a base and having outermost and innermost concentric annular members; (c) aligning the central axes of the cone and the support element with the tip end of the cone closest to the support element; and (d) inserting a portion of the cone into a circular area between two concentric annular members by placing a forming sleeve inside the cone and inserting the forming sleeve between the two concentric annular members, the concentric annular members being generally cylindrical and having an interior and an exterior.

Abstract: A liquid filtration device useable for removing leukocytes from blood is disclosed. Located in-line on the upstream side of the filtration device is a vent device which is configured to allow liquid being filtered to flow therethrough and creates a pressure head sufficient to prevent air from entering the vent until the fluid flow therethrough stops and thereby allows air to automatically enter the vent to allow the air to drain liquid through the filtration device. The vent minimizes air entering the filtration system during the flow of liquid flow therethrough while automatically allowing air to enter the system and thereby drain the system when the flow of fluid stops.

Abstract: A disposable sterile apparatus (1) for blood filtration with a system for the optimization of blood recovery in the passage from one pouch to the next, having a main tube (4, 8, 13, 18, 19) containing sterile air, one end of which is designed for the connection to a first container (pouch) (2) containing the liquid to be filtered and the other end of which is connected to a second empty container (pouch) (20). The foregoing tube (4, 8, 13, 18, 19) includes at least one filter (12) being arranged in the flow of the liquid. The apparatus (1) contains a tube (7) for the return of air from the second (20) to the first container (2) acting to equalize pressure of the liquid at the two extremities of the main tube (4, 8, 13, 18, 19) after the liquid has been filtered. The filter (12) features two interior semi-chambers with filtration material separating them. The first semi-chamber has an inlet port while the second semi-chamber has an outlet port and a venting port.

Abstract: A combined venous and cardiotomy blood reservoir is provided that includes a rigid shell having a top, a bottom, and a continuous side wall. The top and bottom walls are connected to the continuous side walls so as to define a reservoir for venous and cardiotomy blood. A double column structure is provided within the blood reservoir, the first column for receiving and degassing venous blood, the second for receiving, filtering and defoaming cardiotomy blood. The venous blood filtering and defoaming components can include a top venous screen plate, a bottom venous screen plate or stand and a perforated venous cage captured therebetween. The venous column is of generally D-shape and has a double screen structure including an inner microscreen and an outer microscreen received respectively on the inside and outside of the perforated venous cage.

Abstract: A three-stage cardiotomy filter/defoamer dispenses with the conventional tricot sock covering by forming the secondary defoamer as a small-pore foam impregnated with a much heavier concentration of defoaming agent than the primary large-pore defoamer.

Abstract: A quick disconnect filter assembly and manifold assembly for use in a photographic processor having a recirculating system designed for receiving a filter assembly in line. The filter assembly comprising: a housing having an internal chamber, a chamber inlet for allowing processing fluid to flow into the internal chamber and an chamber outlet for allowing processing solution to flow out of the internal chamber. The housing has a quick disconnect valve for allowing quick connection and disconnecting of the filter assembly with the recirculating system without any substantial loss of fluid. The manifold assembly comprising: a body having an inlet port and an outlet port and a fluid connecting passage therethrough connecting the inlet to the outlet. A wall member is provided for dividing the connecting passage into a first receiving section and an outer delivery section.

Abstract: Leucocyte depletion filter assemblies decrease the leucocyte content of a leucocyte-containing liquid at a flow rate of greater than about 25 milliliters per minute. These filter assemblies are suitable for use in an extracorporeal circuit. Methods for removing leucocytes and other deleterious matter are also disclosed.

Abstract: Disclosed is a vacuum filtration device including; (a)filter body including a filter membrane; (b) a passageway extending through the body and communicating with the upstream side of the filter for receiving a fluid to be filtered; (c) a junction mounted on the body on the downstream side of the filter and adapted to receive a closed container for receiving the filtered fluid and including sealing for creating a fluid tight seal between the container and the body; (d) a vacuum port communicating with said junction and adapted to be connected to a vacuum source for drawing the fluid through the filter and comprising a sealable vacuum vent which, when open, provides fluid communication between the vacuum port and a gas source. The device also includes a vacuum vent cap and a filter body vent and vent cap.

Abstract: An apparatus for removing bubbles in a filter housing of a coating equipment includes a cover coupled to the filter housing and including a bottom, an inlet portion, an outlet portion, and a drain portion, the bottom of the cover having an inclined surface at an angle, wherein the drain portion is above the inlet portion and the outlet portion on the inclined surface.

Abstract: A gas elimination device for cellular fluids has a cylindrical chamber that is divided radially into two parts by a cylindrical filter centrally located in the chamber. The fluid inlet is directed tangentially to the outer part of the chamber to create a vortex flow. The vortex flow is stopped by passage of the fluid through the filter, and gas bubbles that have formed rise to the top of the outer part of the chamber. A hydrophobic membrane covers the top of the chamber and allows the gas to exit the chamber to the atmosphere. A one way valve formed in a two part cap covering the chamber prevents flow of air into the chamber. A float valve stops flow when the chamber fills with air.

Abstract: A remover unit for use in a circuit for removing at least leukocyte from blood or blood preparations, which comprises a remover includes a housing having a blood inlet, a blood outlet, and a filter interposed between the blood inlet and the blood outlet, and at least one air vent having a cap for opening and closing the air vent to ambient atmosphere. With the air vents having such a cap, the removal of air in the course of priming the remover, the operation of starting or stopping filtration, the recovery of residual liquids in the remover and the removal of air from the recovery bag can be facilitated. The filter includes a three-dimensionally reticular, porous member with continuous open pores having a most frequent pore diameter to a number average pore diameter ranging from 1.5 to 2.5.

Abstract: The present invention provides a cardiotomy reservoir for containing blood comprising a housing having a top portion, a bottom portion, and a continuous sidewall portion, the top portion and bottom portion connected to the sidewall portion to form an enclosed reservoir. The housing has a blood inlet, a blood outlet, and an air outlet. The housing also has a trap at the bottom portion of the housing, and the blood outlet is connected to a tube that draws from the trap at the bottom portion of the housing. The housing has a filter interposed between the trap and the inside of the main portion of the housing.

Abstract: Apparatus for removing air bubbles from blood and from a dialysate solution are described herein. In one cassette-style embodiment of a blood debubbler, the debubbler includes front and rear covers, a fluid circuit board between the front and rear covers and defining a blood chamber between the fluid circuit board and the front cover and an air chamber between the fluid circuit board and the rear cover, and a microporous membrane separating the blood chamber from the air chamber. A support means is provided for supporting the microporous membrane from the air side of the membrane. A pressure sensor is provided within the front and rear covers for measuring the blood pressure in the blood chamber. The debubbler has a blood inlet port and a blood outlet port for conducting blood to and from the blood chamber. An air port is provided in communication with the air chamber, which allows for air passing through the microporous membrane to escape.

Abstract: A fuel filter element includes an annular filter medium which is supported on a lower support plate. Fuel flows downwardly through the medium and then through apertures at the outer periphery of the support plate. The support plate is provided with depending annular baffles, the outer one being adjacent the apertures but inwardly thereof. The baffles and support plate form an air collection chamber from which air escapes at a controlled rate through an orifice into a central outlet tube.

Abstract: A radiator cooling system filter assembly comprising a first housing member, a second housing member and a filter element. The first and second housing members are interconnectable with a snap fitting to form a filter element cavity into which the filter element is disposed during use. The first housing member includes a first cooling hose fitting at one end. The second housing member includes a second cooling hose fitting at one end. The first and second housing members are interconnectable in a manner such that when the first and second housing members are snapped together to form the filter element cavity, the filter element cavity provides a fluid pathway between the first and second cooling hose fitting. In addition, one of the first and second housing members is provided with a valve mechanism selectively operable by a user to provide a fluid pathway between the filter element cavity and the exterior of the cooling system.

Abstract: A return filter for hydraulic fluids comprises a filter head attachable to a container for fluid, a filter pot arranged on one side of the filter head, a cover releasably arranged on the other side of the filter head, a filter element arranged so as to extend continuously through the filter head and the filter pot, at least one inlet formed on the filter head for the returning fluid, an air port formed on the filter head, and a ventilation filter inserted into this port. Filter head, filter pot and filter cover consist of plastic; a hose nipple integral with the filter head is formed at the inlet for the returning fluid. The air port is surrounded by a housing which is integral with the filter head and is closable by a cover carrying the ventilation filter. The walls of the housing are provided with slots which are open towards the cover. On the one hand, these slots make provision for air to pass through and, on the other hand, they allow the cover to be releasably clipped into the housing.

Abstract: An improved salt basket for dewatering solids, particularly salts resulting from evaporation of industrial wastewaters. The salt basket system includes a pressurizable vessel having a screen floor situated above a bottom liquid collection head, an inlet for the brine/solids slurry from which solids are to be separated and dried, an inlet for air, an inlet for steam (the latter two inlets may be combined, where convenient), an inlet for solids free feed, and a drain outlet (these two may be combined where convenient into a combination feed/drain connection). Preferably, an automated system for introducing feed brine and for removing the solids product is provided. For safety, a pivotally attached lower door has a hydraulic failsafe closure mechanism and locking safety latches to prevent the door from inadvertently opening.

Abstract: An apparatus is provided for preventing the retrograde movement of a prescribed fluid away from a patient during use of an air eliminating filter in intravenous therapy. Such retrograde fluid movement is prevented by employing at least one vented valve assembly to prevent the displacement of air into a proximal chamber of an air eliminating filter.

Abstract: Method for filtering treated water and apparatus to practice the method. The method taught herein consists of filling a first container with water, attaching a special filter apparatus thereto and finally attaching a second, empty bottle to the filter apparatus. When the conjoined containers and filter apparatus are inverted, the water in the first container, now atop the filter apparatus passes through that apparatus and into the second container under the impetus of gravity. Air displaced from the second container by the transfer of water therein is exchanged into the first container by means of a vent located in the body of the filter apparatus. The apparatus taught herein comprises a filter body having disposed within the previously discussed vent, at least one filter element and a check valve to preclude the unwanted re-filtration of previously filtered water.

Abstract: A septum adapted to be pre-coated with a filter and/or chemical treatment composition is formed of a tubular core member having a top and a bottom end. A plurality of top openings is provided in the core member immediately adjacent to the top end. A short actual length portion of the tubular core is impervious adjacent to the plurality of the top opening. The balance, extending for the major portion of the length of the tubular core is perforated. A multi-layer filter screen is positioned about the exterior of the tubular core. A tubular air release shield is positioned on the filter screen having a length to substantially extend from the tubular core top to cover the top openings in the tubular core and the tubular core impervious portion. A vent opening is provided in the air release shield. An end fitting closes the top end of the tubular core.

Abstract: A blood filter for use in filtering blood having side walls, a top, and a bottom joined to the side walls defining an axis with a filtration element surrounding at least a portion of the axis is disclosed. A delivery conduit delivers blood to the interior of the filter at an angle extending upwardly away from a plane which is perpendicular to the axis of the filter to form a vortex which is offset from the filter axis for release of entrapped air through an overlying top vent offset from the central axis, and an exit conduit connected to the interior of the filter element allows blood to flow from the filter element to an exit opening.

Abstract: A device for filtering and refining oil being cycled through an engine includes a container, a cover having an evaporator plate incorporated therein, and a filter cartridge. The evaporator plate is dimensioned to conform to a predetermined inner shape of the container to sealably fit therein inhibiting the purified oil to cycle back through the filter. The configuration is such that a predetermined amount of oil is directed into the device and first passes through the filter cartridge and then passes over the evaporator plate. The contaminants evaporated from the oil pass through a vent in the cover. The filtered and refined oil is then directed back into the engine.

Abstract: Methods and devices are disclosed for passing a first parenteral fluid through a first fluid flow path through a fluid treatment arrangement, passing a second parenteral fluid through a separate and isolated second fluid flow path through the fluid treatment arrangement, and passing the first parenteral fluid through the separate and isolated second fluid flow path through the fluid treatment arrangement.

Abstract: A filtering apparatus comprises a housing having a blood inlet and a blood outlet as well as a vent which are formed protrudingly from the housing. A filtering element is provided inside the housing to partition the inside of the housing into a first space and a second space. The filtering element is made from a porous material folded to have a plurality of pleats, the pleated material being arranged to form a hollow truncated cone with the pleats radiating outward. The opening at the top portion of the filtering element is sealed with a filling material. The filling material has a bottom surface that includes a central portion which protrudes into the second space, and this allows a pleat intersecting portion at the outer circumference of the bottom surface to have an inclined surface with respect to the horizontal.

Abstract: A system for collecting and processing donated blood comprises a first porous medium interposed between a blood collection bag and a satellite bag and a second porous medium interposed between the blood collection bag and another satellite bag. The porous media are leucocyte depletion media. The system may also include one or more of the following: a red cell barrier medium, a separation medium, a gas inlet, and a gas outlet. The system can be used to centrifuge whole blood into one or more components, and includes a means for protecting the system during centrifugation.

Abstract: A self-venting valve having its principal parts molded of nylon reinforced with glass fibers is mounted in the bottom of a fuel filter assembly to drain water and other contaminants from the assembly. The self-venting valve includes a plunger portion with a bore therethrough for draining water from the fuel filter assembly and a valve body member which receives the plunger. The valve body member has a vent hole therein which communicates with the interior of the housing to let air into the housing so that as the water drains from the housing a partial vacuum is not created which might interrupt the flow of water. The plunger is biased to the valve closed position by a coil spring, however the valve may be held in the open position by misaligning lugs on the plunger with slots in the valve body member.

Abstract: Methods and apparatuses for removing unwanted fluid such as gas from a processed blood product are disclosed. Methods include the steps of passing a blood product from a closed first container through a functional biomedical device to produce a processed blood product, flowing the processed blood product and an unwanted fluid from the functional biomedical device to a second container through a conduit, separating the unwanted fluid from the processed blood product in the second container, preventing the flow of the unwanted fluid from the second container through the passage to the functional biomedical device by using a clamp and passing the unwanted fluid from the second container to the first container through an outlet providing fluid communication between the second container and the first container. The outlet includes a barrier medium which allows the passage therethrough of the unwanted fluid but prevents the passage therethrough of the processed blood product.

Abstract: A disposable device for filtration and collection of blood during a surgical operation, which device comprises a housing with a cup-shaped portion, in which a wall section is forming a ledge in the reservoir inside the housing. A first self-supporting filtration element for venuous blood is upstanding from the ledge, and a second filtration element for cardiotomy blood is suspended from the cover, the two elements being arranged side by side in a parallel relationship. The filter elements have an elongate, oval cross-section.

Abstract: Disclosed is a device 10 for filtering agricultural water. At least one protruding part 44 is formed on the circumferential surface of a lower shell 20 in a manner that radially projects and axially extends; the inner surface of the protruding part 44 provides a particulate matter accommodating chamber 46; an exhaust port 38 is formed in the lower end of the lower shell 20, the exhaust port 38 being communicated with the particulate matter accommodating chamber 46; and a valve 40 is provided in the exhaust port 38.

Abstract: There is disclosed a filtration unit for the selective separation of substances from fluids by membrane adsorbers, comprising a plurality of filtration chambers arranged in parallel and using membrane adsorber packs having a variable number of porous laminar sections, and wherein at each membrane adsorber pack, the same pressure drop is maintained between feed and permeate.

Abstract: A cylindrical condensate filter housing is disclosed for the containment of a condensate filter media. The housing includes a domed, removable top member for the filter housing, and the domed top includes mounting means within its domed section for (1) a balanced pressure thermostatic air vent, (2) a backwash water inlet, (3) a filtered condensate outlet, and (4) a safety valve.

Abstract: A fecal parasite concentrator which has a cylindrical body (20) with connections for a sample vial (24) on one end and a centrifuge tube (28) on the other. An integral filter (36) is disposed within the body at right angles coaxially covering the cross sectional area of the hollow body. The filter contains a series of closely spaced square openings for filtration of a liquid diluted fecal specimen. A hollow stem (40) with truncated end (44) extends upwardly from the filter and a number of geometrically shaped orifices (46) permit air to pass therethrough when the diluant specimen flows through the filter.

Abstract: Systems and methods of collecting blood cells, substantially free of undesired matter, use a first container, that forms a part of a blood collection system, to initially collect a quantity of blood cells. A filtration system is then attached to the first container. The filtration system includes a second container, a first fluid path that leads to the second container through a filtration device, and a second fluid path that leads to the second container bypassing the filtration device. The blood cells are conveyed from the first container through the first fluid path and filtration device and into the second container to separate the undesired matter from the blood cells. The blood cells, now substantially free of the undesired matter, are then conveyed from the second container through the second fluid path, bypassing the filtration device, and back into the first container. The filtration system is then detached from the blood collection system.