CHROMagar Listeria

CHROMagar Listeria a chromogenic media for isolation of specimins allowing direct differenciation of Listeria monocytogenes by blue colony colour with a white halo. This chromogenic culture media is based on phospholipases specific of Listeria monocytogenes.

Enrich with Faser 1/2 and Fraser 1 broths, incubate for 48h at 37ºC then streak onto CHROMagar Listeria plate and incubate for 24h at 37ºC.

Rapid and reliable detection of Listeria monocytogenes. Easily distinguishable colonies due to the blue colouring they have aquired with a white halo around the colonies. Other bacterial species are inhibited or give blue without halo or colourless colonies. The colonies of Listeria monocytogenes thus easily detected can be studied directly by aditional tests for confirmation and epidermiological follow up. Results readable under normal lighting.

• Listeria monocytogenes - blue with a white halo
• Other bacterial colonies - inhibited, blue without halo or colourless