Microbial retrieval and sampling pipette with a removable cover

Details Microbial retrieval and sampling pipette with a removable cover Microbial retrieval and sampling pipette with a removable cover

1991-11-13

1993-12-28

Williams, Hezron E.

Measuring and testing

Sampler, sample handling, etc.

Capture device

7386416, 422100, G01N 114

Patent

active

052729265

ABSTRACT:
This invention (FIGS. 1-4) relates to a pipette-syringe combination employing a wire probe attached to the syringe plunger to remove a cover provided over the pipette orifice. One edge of the protective cover is attached via an elastomeric strap to the pipette. When the cover is forced away from the pipette orifice, the elastomeric strap pulls the cover away from, and prevents return of the cover over, the pipette orifice. A suitable sample may then be drawn in the pipette at the location of the cover removal. In the embodiment of FIGS. 5-7, the protective cover is manually removed to obtain a surface growth sample by the wire probe and the sample retracted within the pipette. A quantity of nutrient broth is added to the pipette, the pipette sealed by manually replacing the protective cover, with subsequent incubation of the sealed pipette in an incubator. After incubation, the pipette is agitated to distribute the growth, the cover is manually removed and controlled quantities of the broth transferred to a number of tubes for further study.

REFERENCES:
patent: 3603156 (1971-09-01), Konkol
patent: 3732734 (1973-05-01), Avakian
patent: 3991617 (1976-11-01), d'Autry
patent: 4009611 (1977-03-01), Koffer
patent: 4151750 (1979-05-01), Suovaniemi
patent: 4248830 (1981-02-01), Kallies et al.
patent: 4283950 (1981-08-01), Tervamaki
patent: 4487081 (1984-12-01), De Vaughn et al.

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