Method and apparatus for preventing cross-contamination of biochemical test wells in a microtiter test plate
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United States of America Patent
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Jul 14, 1987
Grant Date -
N/A
app pub date -
Apr 15, 1985
filing date -
Apr 15, 1985
priority date (Note) -
Expired
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Abstract
This invention relates to a porous barrier impregnated with an acidic compound positioned in overlying relation atop the biochemical test wells portion of an antibiotic microtiter test plate effective to intercept and neutralize volatile alkaline products evolved through bacterial growth taking place therein before they can diffuse and contaminate nearby test wells and produce erroneous pH-sensitive color tests. The invention also relates to an improved method for preventing cross-contamination of the biochemical tests being carried out in test wells adjacent microtiter test wells, the contents of which are being analyzed for antibacterial activity, which consists of covering the biochemical test wells with a porous medium impregnated with an acidic compound capable of neutralizing gaseous alkaline products resulting from bacterial growth in wells containing sub-inhibitory antibiotic levels thereby protecting the biochemical tests from erroneous pH-sensitive indicator color changes.
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