XLD Agar (acc. harm. EP/USP/JP)

Appearance (clearness): clear
Appearance (colour): red
pH-value (25 °C): 7.2 - 7.6
Typical composition (g/litre): Yeast extract 3.0; Sodium chloride 5.0; D(+)-Xylose 3.5; Lactose 7.5; Sucrose 7.5; L(+)-Lysine 5.0; Sodium desoxycholate 2.5; Sodium thiosulfat 6.8; Ammoniumiron(III) citrate 0.8; Phenol red 0.08; Agar-agar 13.5.
Growth promotion test in accordance with the harmonised method of EP, USP and JP.
Inoculum on reference medium (Salmonella typhimurium ATCC 14028 (WDCM 00031)): 10 - 100
Inoculum on reference medium (Salmonella Abony NCTC 6017): 10 - 100
Colony count (Salmonella typhimurium ATCC 14028 (WDCM 00031)):
Colony count (Salmonella Abony NCTC 6017):
Recovery on test medium (Salmonella typhimurium ATCC 14028 (WDCM 00031)): ≥ 50 %
Recovery on test medium (Salmonella Abony NCTC 6017): ≥ 50 %
Colony colour (Salmonella typhimurium ATCC 14028 (WDCM 00031)): red
Colony colour (Salmonella Abony NCTC 6017): red
Black centre (Salmonella typhimurium ATCC 14028 (WDCM 00031)): +
Black centre (Salmonella Abony NCTC 6017): +
Growth (Escherichia coli ATCC 8739 (WDCM 00012)): none to very good
Colony colour (Escherichia coli ATCC 8739 (WDCM 00012)): yellow
Medium colour (Escherichia coli ATCC 8739 (WDCM 00012)): yellow
Precipitate (Escherichia coli ATCC 8739 (WDCM 00012)): +
Incubation: Salmonella 18 hrs.; 30-35°C; E.coli up to 48 hrs
The information above is current at this time of publication and is subject to change without notice (except for customers holding a change control agreement with our company). The information/format can be altered at any time and inany way if internal company matters or Standard Regulationsdo say so.

We offer two media types: the superior granulated GranuCult^® and the cost-efficient powdered NutriSelect^® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.

GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany

NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany