Multiwell test plate
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United States of America Patent
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Sep 10, 1991
Issued Date -
N/A
app pub date -
May 30, 1990
filing date -
Jun 18, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A micro-titre test plate includes a thermoplastic incubation tray having an array of a plurality of wells extending therethrough, a filter, and a thermoplastic harvester tray for supporting the filter sheet. The harvester tray has a plurality of apertures therethrough arranged to be registerable with the bottoms of the wells in the incubation tray. To prevent cross-talk between the wells along the filter, the facing surfaces of the harvester tray and incubation tray are provided with mating ridges and grooves circumscribing the juncture of each well and aperture. In one embodiment, the ridges and grooves are thermally bonded to one another to provide a fluid-impervious barrier trapping respective filter disks in the juncture of each well and aperture. In another embodiment, the harvester tray is formed of a pair of apertured, thermoplastic sheets nested with respective thermally bonded grooves and ridges to trap the filter, the harvester tray being not necessarily bonded to the incubation tray.
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