Disposable container for bioburden sample collection and detection
View Patent ↗A disposable container for collection of microbe containing fluid samples is useful in a variety of microbial detection methods. One end of the container is provided with a lid comprising fluid flow apertures on one surface and a membrane filter (MF) on an opposed surface. Methods are disclosed wherein the container is disposed in a holding assembly with the lid gripped in a separate platform. The assembly and platform can be displaced relative to each other to separate the lid from the container.
1. A method of detecting microbial presence in a fluid sample, the method comprising:
filling at least a portion of a collection bottle with a fluid sample containing analyte microbes therein, said collection bottle comprising opposed top and bottom openings with at least one of said openings being sealed during said filling step;
providing a first cap member on one opening of said openings, said first cap member comprising a first surface comprising fluid flow apertures therein and a membrane filter (MF) layer underlying said first surface;
providing a second cap member on another opening of said openings, said second cap member comprising a fluid impervious needle penetrable surface;
draining said fluid sample through said first cap member thereby depositing said analyte microbes on said MF layer;
injecting a reagent into said fluid sample through said fluid impervious needle penetrable surface, said reagent configured to react with said analyte microbes to form a detectable presence on said MF layer, said reagent comprising a staining reagent or a luminescent agent configured to yield luminescent microbes on said MF layer; and
placing a detector in operative association with said MF layer to detect said analyte microbes.
2. The method as recited in claim 1 , wherein said detector is a microscope.
3. The method as recited in claim 1 , wherein said detector comprises a camera.
4. The method as recited in claim 1 , further comprising placing said collection bottle in a bottle holding assembly, and after said step of injecting said reagent into said fluid sample, separating said first cap member from said collection bottle.
5. The method as recited in claim 4 , further comprising securing said first cap member in a gripping member carried by a platform, wherein said platform and said bottle holding assembly are displaced relative to each other to thereby separate said first cap member from said collection bottle.
6. The method recited in claim 1 , further comprising connecting a fluid conduit to said first cap member, and draining said fluid sample through said fluid conduit.
7. The method as recited in claim 6 , further comprising applying a vacuum source to said fluid conduit.
8. A method of detecting microbial presence in a fluid sample, the method comprising:
filling at least a portion of a collection bottle with a fluid sample containing analyte microbes therein, said collection bottle comprising opposed top and bottom openings with at least one of said openings being sealed during said filling step;
providing a first cap member on one opening of said openings, said first cap member comprising a first surface comprising fluid flow apertures therein and a membrane filter (MF) layer underlying said first surface;
providing a second cap member on another opening of said openings, said second cap member comprising a fluid impervious needle penetrable surface;
draining said fluid sample through said first cap member thereby depositing said analyte microbes on said MF layer; and
placing a detector in operative association with said MF layer to detect said analyte microbes.
9. The method as recited in claim 8 , wherein said detector is a microscope.
10. The method as recited in claim 8 , wherein said detector comprises a camera.
11. The method as recited in claim 8 further comprising placing said collection bottle in a bottle holding assembly, and separating said first cap member from said collection bottle.
12. The method as recited in claim 11 , further comprising securing said first cap member in a gripping member carried by a platform, wherein said platform and said bottle holding assembly are displaced relative to each other to thereby separate said first cap member from said collection bottle.
13. The method recited in claim 8 , further comprising connecting a fluid conduit to said first cap member, and draining said fluid sample through said fluid conduit.
14. The method as recited in claim 13 , further comprising applying a vacuum source to said fluid conduit.