Filtration assembly and culture device

Abstract

A filtration assembly can comprise a chamber for holding a fluid sample to be filtered and a cover assembly defining a petri dish into which a filter element can be placed for cultivating microorganisms present on the filter element. A filtration assembly can also comprise a sample reservoir for holding a fluid sample and a base for supporting the sample reservoir detachably connected to the sample reservoir. One of the sample reservoir and the base can have a projection extending around its periphery and the other of the sample reservoir and the base can have a groove extending around its periphery and detachably engaging the projection in a fluid-type manner around its periphery. A filtration assembly can also comprise a sample reservoir for holding a fluid sample to be filtered and a base for supporting the sample reservoir. The base can include a fluid port and communication with an interior of the sample reservoir and a skirt surrounding the fluid port for contact with a vacuum manifold. A method of filtering a fluid may comprise disposing a filter element on a support surface formed on one of a sample reservoir and a base. The method can further comprise detachably connecting the sample reservoir to the base in a fluid type manner without using the ceiling member by engagement between a projection formed on one of the sample reservoir and the base and a groove formed in the other of the sample reservoir and the base. A method of using a filtration assembly can comprise placing a base of a filtration assembly on a vacuum manifold with a skirt of the base contacting an inlet tube of the manifold around the periphery of the skirt. A method of culturing microorganisms can comprise passing the fluid sample through a filter element and placing the filter element in a petri dish defined by a cover assembly mountable on a sample reservoir.