Method and device for detecting bacteria and determining the concentration thereof in a liquid sample
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United States of America Patent
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Jul 23, 2019
Grant Date -
Jul 27, 2017
app pub date -
Mar 16, 2017
filing date -
Oct 29, 2013
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for detecting bacteria and determining the concentration thereof in a liquid sample includes the steps of taking an optical section through a container holding a volume of the liquid sample at a predetermined field of view and at a predetermined focal plane depth or angle and after a period of time has elapsed to allow non-bacteria in the sample to settle to the bottom of the container. Since bacteria auto arranges in the liquid sample, forming a lattice-like grid pattern, an optical section through the volume of auto-arranged bacteria may be used to measure the quantity of bacteria residing in that section. A container for holding the liquid sample has particular structure which aids in separating the non-bacteria from the bacteria.
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