Christensen’s Urea Agar
SIAL/27048 - NutriSelect® Basic, suitable for microbiology
Synonym: Urea Agar Base acc. to Christensen; Urea Test Agar
Product Type: Chemical
| agency | according to GB 4789.4-2016 |
| according to ISO 10273:2017 | |
| according to ISO 19250:2010 | |
| according to ISO 6579-1:2017 | |
| application(s) | clinical testing environmental food and beverages |
| microbiology | |
| composition | |
| agar, 12 g/L | |
| gelatine peptone, 1 g/L | |
| phenol red, 0.012 g/L | |
| potassium dihydrogen phosphate, 2 g/L | |
| sodium chloride, 5 g/L | |
| final pH | 6.8±0.2 (25 °C) |
| form | powder |
| manufacturer/tradename | NutriSelect® Basic |
| product line | BioChemika |
| Quality Level | 200  |
| shelf life | limited shelf life, expiry date on the label |
| sterility | non-sterile |
| suitability | nonselective and differential for Enterobacter spp. |
| nonselective and differential for Escherichia coli | |
| nonselective and differential for Klebsiella spp. | |
| nonselective and differential for Proteus spp. | |
| nonselective and differential for Yersinia spp. | |
| nonselective and differential for coliforms | |
| technique(s) | microbe id | specific enzyme detection: suitable |
| microbiological culture: suitable |
| Application: | For the differentiation of urea-metabolizing microorganisms. Weak urease producers such as klebsiella, enterobacter etc. can also be differentiated. Yersinia pseudotuberculosis (urea positive) from Yersinia pestis (urea negative) acc. to Thal and Chen (1955). |
| 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 |
| Legal Information: | NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany |
| Other Notes: | Screening of enteric pathogens from stool specimens |
| Preparation Note: | Dissolve 21 g in 950 ml distilled water. Sterilize by autoclaving at 121°C for 15 minutes. After cooling to 50°C, add aseptically 50ml (10 vials) sterile filtered 40% urea solution (Cat. No. 08582) and let cool as slants. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| UNSPSC | 41171606 |