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1.46751

Millipore

Readyplate XLD Agar acc ISO 6579

For isolation and differentiation of Salmonella, box of 20 plates, plate diam. 90 mm

Sinónimos:

Xylose Lysine Deoxycholate Agar

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About This Item

UNSPSC Code:
41106217
NACRES:
NA.74

agency

APHA
ISO 19250
ISO 6579

Quality Level

form

solid

feature

ready-to-use

packaging

box of 20 plates

manufacturer/tradename

ReadyPlate

storage condition

(Store dry and tightly closed)

plate diam.

90 mm

color

red

application(s)

food and beverages
industrial qc
microbiology

storage temp.

15-25°C

suitability

Salmonella spp.

General description

XLD agar is a selective agar that enables the identification of Salmonella species over other bacteria. This medium relies on three indicator systems:
  1. Degradation of xylose, lactose, and sucrose to acid causes phenol red to change its color to yellow.
  2. Production of hydrogen sulfide is indicated by thiosulfate and iron (III) salt, which react to form a precipitate of black iron sulfide in the colonies.
  3. The appearance of a purple coloration around the colonies due to an increase in pH indicates bacteria that decarboxylate lysine to cadaverine.
These reactions can proceed simultaneously or successively and may cause the pH indicator to exhibit various shades of color, or it may change its color from yellow to red on prolonged incubation. The culture medium is moderately selective thus, the growth of unwanted organisms is suppressed, while sought bacteria can be tentatively grouped by reading the net effect of carbohydrate dissimilation, lysine decarboxylation, and the formation of hydrogen sulfide leading to black colonies. Agar is the solidifying agent.

Application

ReadyPlate XLD Agar plates are suitable for isolation and differentiation of Salmonella from food and animal feed, water, and other materials.

Legal Information

READYPLATE is a trademark of Merck KGaA, Darmstadt, Germany

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable


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