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Thermo Scientific™ XLD Agar (Dehydrated)

Isolate Salmonella and Shigella from food and clinical specimens with this selective medium.

Manufacturer:  Thermo Scientific™ CM0469B

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Catalog No. OXCM0469B



Isolate Salmonella and Shigella from clinical specimens and foods with selective Thermo Scientific™ Oxoid™ XLD Agar (Dehydrated). The medium relies on xylose fermentation, lysine decarboxylation and production of hydrogen sulphide for the primary differentiation of shigellae and salmonellae from non-pathogenic bacteria. The careful addition of sodium desoxycholate inhibits the growth of coliforms without decreasing the ability to support shigellae and salmonellae.

Salmonella and Shigella are major causes of bacterial enteric illness with transmission occurring via the fecal-oral route, person-to-person contact, or by the ingestion of contaminated food or water.

Use XLD Medium for the screening of samples containing mixed flora suspected of harboring enteric pathogens, e.g., medical specimens or food products.

  • Easy-to-read: easily differentiate Salmonella (red colonies with black centers) from Shigella (red colonies) and other coliforms (yellow, opaque colonies).
  • Superior sensitivity and selectivity: exceeds that of the traditional plating media e.g., Eosin Methylene Blue and Bismuth Sulphite Agars, which tend to suppress the growth of shigellae.

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Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.



XLD Medium
500 g
For 9.4L medium
Product Certifications


For Laboratory Use Only