Ethyl Violet Azide Broth

Ethyl Violet Azide Broth (also known as Litsky broth) is used to carry out the confirmation test of the detection and enumeration of fecal streptococci (enterococci) in drinking water and waste water, in frozen foods and other food products by the most probable number method. The procedure involves two stages :  
      - presumptive test in Azide Dextrose Broth (Rothe)
      - confirmation in Ethyl Violet Azide Broth (Litsky)