Automated preservative efficacy test method and device
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United States of America Patent
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Apr 18, 2017
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app pub date -
May 22, 2014
filing date -
May 22, 2014
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Abstract
A preservative efficacy test for determining efficiency of at least one preservative material that is present in a consumable product to reduce or eliminate living microorganisms that includes challenging the preservative material with at least one microorganism derived from a pure culture by inoculating a sample of the product with a quantity of at least one challenge microorganism and allowing the microorganisms to grow for an predetermined interval after which the preservative is neutralized and a portion of the resulting sample is cultured in a testing system that includes at least one testing container, wherein the testing container contains liquid growth media and sensor means capable of monitoring microorganism growth by sensing the metabolic by-products generated by growth of microorganisms present in the liquid growth media and producing an output signal that can be measured and analyzed.
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