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Listeria Isolation Medium (Oxford) Group Picture

Listeria Isolation Medium (Oxford)

Excl. VAT Incl. VAT
Code: KM0121-500G
  Pack Size List Price Qty  
photo_camera 500g
KM0121-500G
£90.30
Pack: 500g

£90.30

Listeria isolation medium (Oxford) is based on the formulation described by Curtis et al. and is used for the isolation and identification of Listeria spp. in food and clinical laboratories.

Columbia agar base provides the required carbon, nitrogen and vitamins in the medium. Lithium chloride is included to inhibit enterococci. Aesculin is present as an indicator; Listeria spp. will hydrolyse aesculin and the associated reaction with the ferric ammonium citrate gives rise to a black precipitate around the colonies.

Selectivity is enhanced by addition of Listeria Oxford selective supplement (LS0030).

This contains acriflavine, cefoxitin, colistin, fosfomycin and amphotericin to inhibit any yeasts present and some other Gram-positive and Gram-negative organisms that may be present in specimens.

Used for the isolation and identification of Listeria spp. in food and clinical laboratories.

Additional Information

Shelf Life (days): 1095 days

Storage Temp (C): 10-30°C

Dehydrated Medium Appearance: Fine Powder

Prepared Medium Appearance: Firm Gel

Dehydrated Medium Colour: Beige

Prepared Medium Colour: Pale Yellow

Dehydrated PH: 7.2±0.2

Prepared PH: 7.2±0.2

Recommended Incubation: Aerobically at 37°C for 24-48 hours

Formula*g/L

Columbia agar base: 41.0

Aesculin: 1.0

Ferric ammonium citrate: 0.5

Lithium chloride: 15.0

Total: 57.5

*Adjusted/supplemented as required to meet performance requirements

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