Determining amount of biological material
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United States of America Patent
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-
Jul 18, 1989
Issued Date -
N/A
app pub date -
Feb 1, 1988
filing date -
Apr 3, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Apparatus for determining the amount of biological material in a fluid medium, typically the concentration of bacteria in a fermentation chamber, has a test cell through which a medium can be passed with bacteria or after bacteria have been removed by filtration. In the test cell a vibratory element is excited to a resonant frequency indicative of density and a comparison of medium density and medium plus bacteria density reveals the bacteria concentration.
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