1.08492

Urea agar (Base) acc. CHRISTENSEN

acc. ISO 6579, ISO 10273, ISO 19250, ISO 21567

• UNSPSC Code: 41106213
• NACRES: NA.74

Properties

• Quality Level: 200
• sterility: non-sterile
• form: powder (dehydrated (DCM))
• manufacturer/tradename: NutriSelect^® Prime
• technique(s): microbe id | specific enzyme detection: suitable; microbiological culture: suitable
• pH: 6.7-6.9 (37 °C, 21 g/L in H₂O, after autoclaving)
• solubility: 21 g/L
• bulk density: 640 kg/m³
• application(s): food and beverages; microbiology
• storage temp.: 15-25°C
• suitability: Klebsiella spp.; Proteus spp.; urea-degrading bacteria

Description

Analysis Note

Appearance (clearness): clear
Appearance (color): red
pH-value (25 °C): 6.6 - 7.0
Solidification behaviour (2 hrs., 45 °C): liquid
Growth promotion test in accordance with the current version of DIN EN ISO 11133.
Growth (Proteus mirabilis ATCC 29906 (WDCM 00023)): good to very good
Growth (Klebsiella pneumoniae ATCC 13883 (WDCM 00097)): good to very good
Growth (Yersinia enterocolitica ATCC 23715 (WDCM 00160)): good to very good
Growth (Yersinia enterocolitica DSM 13030 (WDCM 00216)): good to very good
Growth(Escherichia coli ATCC 8739 (WDCM 00012)): good to very good
Growth (Escherichia coli ATCC 25922 (WDCM 00013)): good to very good
Growth (Escherichia coli ATCC 11775 (WDCM 00090)): good to very good
Growth (Escherichia coli DSM 19683 (WDCM 00179)): good to very good
Growth (Salmonella typhimurium ATCC 14028 (WDCM 00031)): good to very good
Growth (Salmonella enteritidis ATCC 13076 (WDCM 00030)): good to very good
Growth (Shigella sonnei ATCC 29930 (WDCM 00127)): good to very good
Growth (Shigella flexneri ATCC 29903 (WDCM 00125)): good to very good
Colour change (Proteus mirabilis ATCC 29906 (WDCM 00023)): + (red/pink)
Colour change (Klebsiella pneumoniae ATCC 13883 (WDCM 00097)): + (red/pink)
Colour change (Yersinia enterocolitica ATCC 23715 (WDCM 00160)): + (red/pink)
Colour change (Yersinia enterocolitica DSM 13030 (WDCM 00216)): + (red/pink)
Colour change (Escherichia coli ATCC 8739 (WDCM 00012)): - or yellow
Colour change (Escherichia coli ATCC 25922 (WDCM 00013)): - or yellow
Colour change (Escherichia coli ATCC 11775 (WDCM 00090)): - or yellow
Colour change (Escherichia coli DSM 19683 (WDCM 00179)): - or yellow
Colour change (Salmonella typhimurium ATCC 14028 (WDCM 00031)): - or yellow
Colour change (Salmonella enteritidis ATCC 13076 (WDCM 00030)): - or yellow
Colour change (Shigella sonnei ATCC 29930 (WDCM 00127)): - or yellow
Colour change (Shigella flexneri ATCC 29903 (WDCM 00125)): - or yellow
Incubation: up to 24 hours at 37 ± 1 °C, Yersinia 24 ± 2 hours at 30 ± 1 °C, aerobic.

Footnote

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.

Legal Information

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

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

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 2