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This is one of the large group of media, affectionately known as ‘Peptone Water Sugars’, that are generally used in the screening and/or identification of organisms particularly the enterobacteriacae. A positive fermentation of the substrate is clearly indicated by the medium turning pink due to the inclusion Andrade’s Indicator. -
A modification of Christensen’s Medium by Maslen this medium is generally used to detect rapid Urease activity of Proteus spp although it can be used to detect Urease activity of other Enterobacteriaceae including Urease producing Salmonella and Shigella. Unlike Christensen’s Medium when used for the later purpose it is not necessary to increase the incubation time.
