Listeria isolation swabcheck is designed to be used alongside traditional selective methods to improve the quality system and minimize the risk of listeria contamination. This simple to use diagnostic test can be applied anywhere in the environment and on foodstuffs where the presence of listeria species would be critical. Listeria sp and specifically listeria monocytogenes are rapidly becoming the most important pathogen in the food industry; regulatory bodies from around the world are insisting that all food products are listeria free. Listeria isolation swabcheck works on an enhanced esculin media formulation. The hydrolysis of esculin gives a distinctive black/brown precipitate. Inhibitors and antibiotics are present in the media, which will inhibit the growth of non-listeria species.