Rose Bengal Agar Base, Granulated is used for selective isolation and enumeration of yeasts and moulds from environmental materials and food stuffs. The use of media with an acidic pH that selectively inhibits the growth of bacteria and thereby promotes the growth of fungi. Neutral pH media with antibiotics is advantageous for fungal growth. Rose Bengal Agar is recommended in standard methods for the enumeration of yeasts and moulds from foodstuffs and water.