Patent application number | Description | Published |
20080290040 | Methods and Apparatus for Foam Control in a Vacuum Filtration System - A flow diverter, vacuum control and tilting of the liquid filtering system are used alternatively or in conjunction to reduce foam production in a filtered liquid sample. A liquid filtering system includes an upper sample reservoir, a filter and a lower storage bottle. A vacuum is applied below the sample filter to draw sample liquid through the sample filter into the storage bottle. A flow diverter may be used to direct flow of the filtered liquid sample onto a sidewall of the storage bottle or guide flow to a bottom of the storage bottle. The vacuum may be regulated to reduce foaming. The liquid filtering system may be tilted to direct fluid to the sidewall of the lower storage bottle and reduce foaming. | 11-27-2008 |
20090026126 | Vacuum Base and Related Methods and Apparatus for Vacuum Filtration - Liquid filter assemblies including an upper sample reservoir, a sample filter and a lower storage bottle are supported by a vacuum base. The base has a vacuum inlet port and, for connection to the liquid filter assembly, a vacuum outlet port. A vacuum is provided through the base to below the sample filter to draw sample liquid through the sample filter into the storage bottle. The base may include an auxiliary vacuum outlet port for connection with additional devices. The bases may be connected from one to another through auxiliary vacuum outlets and the vacuum inlets to make a chain of liquid filter assemblies supplied from one vacuum source. Alternatively, one base may include multiple vacuum outlet ports so that it may support and supply vacuum to a plurality of liquid filter assemblies. | 01-29-2009 |
20090026153 | Method and apparatus for filtrate storage handling - A method of removing a filtrate storage bottle from a water bath includes inserting at least two finger underneath a radially protruding lip of a filtrate storage bottle sealing cap and raising the at least two fingers to lift the bottle from the water bath. A side wall portion of the filtrate storage bottle sealing cap is smaller in perimeter than a circle surrounding the radially protruding lip. The cap creates a liquid tight seal with the filtrate storage bottle. | 01-29-2009 |
20090026154 | Methods and Apparatus for Supporting a Vacuum Filtration Device - A portable fixture for supporting a vacuum filtration device includes a cradle portion and a clamping portion. The cradle portion supports the vacuum filtration device. The clamping portion removeably attaches the portable fixture to a support in order to secure and support the filtration device above a workspace. The portable fixture may also provide a vacuum to the filtration device. To that end, the portable fixture may have a vacuum inlet port which may be connected to a vacuum source and a vacuum outlet port that is fluidly connected to the vacuum inlet port. | 01-29-2009 |
20090215150 | Sample container and filtration apparatus and method of filtration using the same - A sample container and filtration apparatus is described comprising a sealable sample container and a surface that is configured to interface with a vacuum base. When the surface interfaces with the vacuum base, a portion of the sample container is broached, providing a pathway for the vacuum source to pull the sample therethrough. In exemplary embodiments, the broachable portion of the sample container comprises an actuating valve. The method for using the sample container and filtration apparatus significantly reduces the possibility of contamination of the sample and during the sample testing procedure relative to the conventional devices and procedures, provides more consistent and reliable test results, and significantly reduces the number of preparation and testing steps for the testing procedure. | 08-27-2009 |
20120267301 | Method and Apparatus for Filtrate Storage Handling - A method of removing a filtrate storage bottle from a water bath includes inserting at least two finger underneath a radially protruding lip of a filtrate storage bottle sealing cap and raising the at least two fingers to lift the bottle from the water bath. A side wall portion of the filtrate storage bottle sealing cap is smaller in perimeter than a circle surrounding the radially protruding lip. The cap creates a liquid tight seal with the filtrate storage bottle. | 10-25-2012 |
20120294781 | Vacuum Base and Related Methods and Apparatus for Vacuum Filtration - Liquid filter assemblies including an upper sample reservoir, a sample filter and a lower storage bottle are supported by a vacuum base. The base has a vacuum inlet port and, for connection to the liquid filter assembly, a vacuum outlet port. A vacuum is provided through the base to below the sample filter to draw sample liquid through the sample filter into the storage bottle. The base may include an auxiliary vacuum outlet port for connection with additional devices. The bases may be connected from one to another through auxiliary vacuum outlets and the vacuum inlets to make a chain of liquid filter assemblies supplied from one vacuum source. Alternatively, one base may include multiple vacuum outlet ports so that it may support and supply vacuum to a plurality of liquid filter assemblies. | 11-22-2012 |
20130139617 | Sample Container and Filtration Apparatus and Method of Filtration Using Same - A sample container and filtration apparatus includes a sample container portion with an interior volume and a fluid path passing through a bottom wall. The sample container may also include a valve casing connected to and moveable relative to the sample collection portion between a first and second position. A valve secured to and moveable with the valve casing may close the fluid path of the sample collection portion when in a first position and open the fluid path when in a second position. The apparatus may also include a vacuum base coupling portion that is distal to the valve casing, and includes a filter membrane support surface for supporting a filter membrane. | 06-06-2013 |
20140109526 | Carboy With Permanent Closure and Method of Filling a Carboy - A carboy has a rigid body forming an interior chamber for receiving a liquid. The chamber has a wall terminating at an opening and maintains a substantially constant shape at room temperature. The carboy also has a closure permanently secured to the opening for forming a sealed connection with the rigid body, and a plurality of tubes extending from the plurality of ports in the closure to fluidly connect with a carboy circuit. The closure has a plurality of ports for selectively providing access to the interior chamber, where at least one of the tubes extends out of the interior chamber. The at least one tube also extends inwardly from the closure and into the interior chamber. | 04-24-2014 |