Water Quality Analysis by Most Probable Number (MPN)

Water Quality Analysis by Most Probable Number (MPN)

The most probable number (MPN) analysis is a statistical method based on the random dispersion of microorganisms per volume in a given sample. In this method, measured volumes of water are added to a series of tubes containing a liquid indicator growth medium. The media receiving one or more indicator bacteria show growth and a characteristic color change. The color change is absent in those receiving only an inoculum of water without indicator bacteria. From the number and distribution of … Read more