Thermo Scientific™ Urea Agar

Description

• Differentiate microorganisms on the basis of urease activity with Thermo Scientific™ Remel™ Urea Agar
• Christensen developed this medium to help in differentiation of rapid urea-positive Proteus spp
• from other urea-positive enteric gram-negative bacilli 1,2
• This medium allows for urease activity to be demonstrated in organisms which have more complex nitrogen requirements 3
• The medium can also be used to determine urease activity of non-enteric gram-negative bacilli, such as Brucella and Bordetella and to differentiate Cryptococcus and other yeasts 4,5
• Urea Agar is used to detect rapid urease activity of the Proteae and non-rapid urease activity of some Enterobacteriaceae
• Urea Agar is a lightly buffered medium that contains urea and phenol red, a pH indicator
• When organisms utilize urea, ammonia is formed which changes the pH of the medium to alkaline
• Ready to use – Convenience of prepared media
• Easy to interpret – Intense pink-red color development indicates a positive test
• Urea Agar contains urea as a substrate to detect urease activity
• Gelatin peptone promotes rapid growth of many enteric gram-negative bacilli, permitting a decrease in incubation time
• Dextrose helps eliminate false-negative reactions and stimulates urease activity in those organisms which hydrolyze urea slowly
• Sodium chloride provides electrolytes and monopotassium phosphate acts as a buffer
• Phenol red is a pH indicator that changes color from pale-yellow to pink-red in an alkaline environment
• Agar is the solidifying agent
• Not all products are available for sale in all territories
• Please inquire
• Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.