초록 ▼

Method and apparatus for the microbiological testing of liquids to identify and count living microorganisms contained therein includes a tubular sleeve for collecting the liquid sample to which there is attached at one end a microporous membrane filter. Each end of the sleeve has the shape of a fema

Method and apparatus for the microbiological testing of liquids to identify and count living microorganisms contained therein includes a tubular sleeve for collecting the liquid sample to which there is attached at one end a microporous membrane filter. Each end of the sleeve has the shape of a female receptacle portion where into one end a container housing a culture medium can be nested by force for applying the medium to the underside of the filter and where into the other end a cover can be nested to provide a substantially tight sealing of the device. Preferably, the tubular sleeve is in the form of a bellows the convolutions of which can be either compressed or expanded to correspondingly alter the volume of the sleeve between minimum and maximum values.

대표청구항 ▼

A device for microbiological testing of a liquid sample by means of a membrane filter comprising: a sleeve having a first end and a second end; a membrane filter fixed at its periphery to said first end of said sleeve; each of the ends of said sleeve being formed as a female receptacle; a container

A device for microbiological testing of a liquid sample by means of a membrane filter comprising: a sleeve having a first end and a second end; a membrane filter fixed at its periphery to said first end of said sleeve; each of the ends of said sleeve being formed as a female receptacle; a container shaped to be matingly inserted into said first end and to support said membrane when matingly inserted; said container comprising a hollow section having a bottom surface and a peripheral wall surrounding said bottom surface, an absorbent material positioned within said hollow section and a removable sealing element sealed to said peripheral wall to prevent liquid from passing through said sealing element; said container having holes providing a communication path from the sleeve to the space under the container, and wherein said sealing element is located in such a way as to not cover said holes; said container for housing a culture medium in said absorbent material for application thereof under said membrane filter; said second end of said sleeve shaped to receive a cover for ensuring substantial closing of said device.