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27048

Christensen′s Urea Agar

NutriSelect® Basic, suitable for microbiology

Synonym(s):

Urea Agar Base acc. to Christensen, Urea Test Agar

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About This Item

NACRES:
NA.74
UNSPSC Code:
41171606
Technical Service
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Quality Segment

agency

according to GB 4789.4-2016, according to ISO 10273:2017, according to ISO 19250:2010, according to ISO 6579-1:2017

sterility

non-sterile

product line

BioChemika

form

powder

shelf life

limited shelf life, expiry date on the label

composition

agar, 12 g/L , gelatine peptone, 1 g/L , D(+)-glucose, 1 g/L , phenol red, 0.012 g/L , potassium dihydrogen phosphate, 2 g/L , sodium chloride, 5 g/L

manufacturer/tradename

NutriSelect® Basic

technique(s)

microbe id | specific enzyme detection: suitable, microbiological culture: suitable

final pH

6.7±0.2 (25 °C)

application(s)

microbiology, cannabis testing
clinical testing
environmental
food and beverages

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

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).

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.

Other Notes

Screening of enteric pathogens from stool specimens
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

Disclaimer

This product will be discontinued in the near future; however, stock is still available. The recommended replacement product is 1.08492 - Urea agar (Base) acc. CHRISTENSEN

Storage Class

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

Eyeshields, Gloves, type N95 (US)

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