|X.L.D. MEDIUM 500g
X.L.D. Medium 500g
Thermo ScientificTM OxoidTM
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.
XLD Agar (Dehydrated), Oxoid Composition
|Ferric ammonium citrate
|pH 7.4 ± 0.2 @ 25°C
XLD Agar (Dehydrated), Oxoid Preparation:
Suspend 53g in 1 litre of distilled water. Heat with frequent agitation until the medium boils. DO NOT OVERHEAT. Transfer immediately to a water bath at 50°C. Pour into sterile Petri dishes as soon as the medium has cooled.
It is important to avoid preparing large volumes which will cause prolonged heating.
Storage conditions and Shelf life
Store the dehydrated medium at 10-30°C and use before the expiry date on the label.
Store the prepared medium at 2-8°C.