Thermo Fisher, CM0505B, MacConkey Broth Purple (Dehydrated)

Quantity: 500 g
Unit Size: Each
MacConkey Broth has long been used as a presumptive medium for the detection of coli-aerogenes organisms. In the original medium, litmus was employed as the indicator of acid production but, in later publications, MacConkey suggested neutral red as a more satisfactory alternative. Childs & Allen^1showed that some samples of neutral red exerted an inhibitory effect on the growth of Escherichia coli in this medium.Bromocresol purple is less inhibitory, and the color change from purple to yellow provides a more sensitive and definite indication of acid formation; therefore this indicator is used in MacConkey Broth Purple.Not all products are available for sale in all territories. Please inquire.Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.