The assessment of two media for the confirmation ofEscherichia coliin water samples in single-tube tests

Abstract

SUMMARYTwo single-tube media, lactose-tryptone-lauryl sulphate broth (LTLSB) and lauryl-tryptose-mannitol broth were tested in parallel in a series of 1111 tests on water samples from a variety of sources.LTLSB was found to be superior both in gas and indole production from Escherichia coli when incubated at 44°C and is recommended as the most suitable single-tube confirmatory test for this organism.