Method for enumerating bacterial populations
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United States of America Patent
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Oct 20, 1998
Grant Date -
N/A
app pub date -
Apr 26, 1995
filing date -
May 1, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for determining the number of microorganisms in a liquid sample, including the steps of dividing the liquid sample into a plurality of separate sub-samples, measuring the magnitude of at least one impedance component across each of the sub-samples and determining the number of the sub-samples for which the measured magnitude of the at least one impedance component indicates microorganism growth. The method preferably further includes the steps of applying A.C. voltage at a plurality of frequencies across at least a portion of the sample and measuring the at least one impedance component in response to at least some of the plurality of A.C. frequencies.
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