Our Insite tests for Listeria and Salmonella use AOAC approved media and give a rapid easy-to-use, self-contained, environmental test. Each device contains a liquid media formulated with antibiotics, growth enhancers, and color-changing compounds specific to Listeria or Salmonella species. The swab also contains neutralizing buffers to allow for testing of surfaces with traces of sanitizers that might interfere with testing. Simply swab the test area and wait. A change in color after 24-48 hours of incubation is considered presumptive positive. No expensive lab equipment is required and no additional sample handling of the sample is necessary.