Patent 8039206 was granted and assigned to Millipore Sigma on October, 2011 by the United States Patent and Trademark Office.
Improved methods for detecting microorganisms, such as yeast and bacteria in mixtures, are disclosed. Methods include passing a sample mixture through a filter device, which has been pretreated with a detergent, resuspending the filtrand in the filter membranes and detecting the presence of microorganisms in the filtrand.