• USA Home
  • 27048 - Christensen’s Urea Agar

EMAIL THIS PAGE TO A FRIEND
27048 Sigma-Aldrich

Christensen’s Urea Agar

for microbiology

Synonym: Urea Agar Base acc. to Christensen, Urea Test Agar

Purchase

Properties

Related Categories A - M, All Food Control Media (alphabetical), All Solid Media/Agars, Biochemical Identification Media by Test, Biochemical Identification Media, A to Z,
grade   for microbiology
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
final pH   6.8±0.2 (25 °C)
suitability   nonselective and differential for Enterobacter
  nonselective and differential for Escherichia coli and Coliforms
  nonselective and differential for Klebsiella
  nonselective and differential for Proteus
  nonselective and differential for Yersinia

Description

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).

Other Notes

Screening of enteric pathogens from stool specimens

Same product — same quality — now Sigma-Aldrich brand

Preparation Note

Supplement: 10 vials/l sterile filtered 40% urea solution (Cat. No. 08582)

Price and Availability

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis

Protocols & Articles

Articles

Differentiation of Escherichia coli from coliforms

In August 2008, the discovery of E. coli-contaminated beef in the United States prompted a nationwide recall of beef. The source turned out to be one supplier that had a history of contamination of i...
Jvo Siegrist
AnalytiX Volume 8 Article 5
Keywords: Decarboxylations, Fermentation, Genetic, Indicators, Microbiology, Reductions

Microbiology Introduction

An initial aim of all microbiologists is the reproducible growth of their microbial cultures, no matter whether the microorganisms are of natural origin or have been genetically engineered by man. Re...
Keywords: Absorption, Aerobic, Anaerobic, Antibiotics, Antimicrobials, Buffers, Culture media, Diffusion, Environmental, Filtration, Genetic, Growth factors, Metabolism, Phase transitions, Precipitation, Reductions, Respiration, Sample preparations, Vitamins

Microbiology Theory: Media Preparation

Microorganisms need nutrients, a source of energy and certain environmental conditions in order to grow and reproduce. In the environment, microbes have adapted to the habitats most suitable for thei...
Keywords: Culture media, Digestions, Environmental, Filtration, Growth factors, Indicators, Microbiology, Phase transitions, Precipitation, Vitamins

Testing EZ-Fit™ Products Family for Bioburden Testing

The EZ family of products has been designed to optimize and streamline the bioburden workflow. The family includes:
Keywords: Filtration, Separation

Yersinia Diagnostic

Yersinia are rod-shaped, Gram-negative facultative anaerobic bacteria. They exhibit fermentative metabolism and are oxidasenegative, mannitol-positive. A psychrophilic organism, Yersinia survives and...
Ivo Siegrist
Analytix Volume 7 Article 5
Keywords: Anaerobic, Clinical, Diagnostic, Metabolism, Microbiology

Peer-Reviewed Papers
15

References

Set your institution to view full text papers.
Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?