This medium is recommended for rapid detection of water pathogens such asE. coli, Salmonella, Klebsiella, Citrobacter,Vibrio and Pseudomonas, Escherichia coli changes colour of medium to green , Salmonella changes colour of medium to black, Klebsiella changes colour of medium to yellow, Vibrio changes colour of medium to brownish red, Pseudomonas changes colour of medium to dark red, Qualitative test