1. Our chromogenic medium was the only chromogenic L.m. collaboratively validated by the FDA.
2. Use a chromogenic reaction identifying a specific virulence factor, i.e. phoshpatidylinositol-specific phospholipase C.
3. Highly differential detection system identifies only the pathogenic Listeria species (L.m. & L.i.). Selectivity and sensitivity for L.m. & L.i. is 96% and 100%, respectively, with no false negatives (>100 L.m. & L.i. strains tested).
4. Water insoluble chromogenic lattice prevents the colony color from diffusing into the agar making detection and enumeration much easier.
5. Competitors’ non-chromogenic agars (MOX, Oxoid & Palcam) which depend on esculinase as the differential trait allows many Listeria sp., Bacillus sp. and Enterococcus sp. to grow as black color colonies. Since the end product is water soluble, the black color will diffuse into the medium. Additional expensive tests are required to further identify L.m. strains.
6. Competitors’ chromogenic media which utilize the X-β-D-glucopyranoside substrate will allow too many Listeria sp., Bacillus sp. and Enterococcus sp. to grow as blue colored colonies without clear halos. These colonies will interfere with the identification of L.m. & L.i. by coalescing together making it difficult to see the clear halo around the blue colony of the L.m. & L.i.
7. Our rapid and convenient fluorogenic/acid test differentiates L.m. from L.i. as quick as 6 hours-saving time and costs.
8. The shelf life of prepared plates remains stable for at least 60 days, stored in the dark at 2-8°C. One bottle of plating medium powder and two boxes of supplements will make approximately 230 plates.
9. Collaboratively validated by FDA and listed in their BAM.