CHROMagar™ Staph aureus - 5000 ml

Description

Chromogenic medium for isolation and direct differentiation of Staphylococcus aureus in clinical and industrial samples.

The product is composed of a single powder medium.

MEDIUM PERFORMANCE:
CLINICAL FIELD
1. Easy to read: compared to Blood Agar, CHROMagar™ Staph aureus allows easy differentiation of mauve from blue or white colonies and is of considerable help in identifying suspect colonies.
2. Higher specificity (exceeds 99 %*) than Blood Agar, especially in specimens heavily loaded with gram negative flora competing with and inhibiting S. aureus.
*Specificity from scientific study: “Evaluation of CHROMagar™Staph aureus, a new chromogenic medium, for isolation and presumptive identification of Staphylococcus aureus from human clinical specimens.” Gaillot O. et al. ASM 2000.
3. Better selectivity and sensitivitycompared to the conventional media, Mannitol Salt Agar (called Chapman Agar in Europe), which is showing an excessive rate of false positives and of false negatives.
4. Lower workload: Blood Agar, another conventional medium for detecting Staphylococcus aureus, requires tedious and costly examination with immunological tests of 5-10 colonies per suspected sample. With CHROMagar™ Staph aureus, testing a single colony with typical colour for further identification will generally be sufficient for high probability detection of Staphylococcus aureus.
INDUSTRIAL FIELD
1. Easy to prepare: The conventional medium for S. aureus is the Baird-Parker which has to be supplemented with RPF (Rabbit Plasma Fibrinogen), rendering the plate manufacturing delicate and complex, and also reducing the shelf life of the poured plates to a couple of weeks. On the contrary, CHROMagar™ Staph aureus comes with all the compounds already in the agar (no need of any supplement).
2. Fast: The results on Baird Parker have to be read after 48h of incubation while with CHROMagar™ Staph aureus the results are available after only 24 h.

TYPICAL APPEARANCE OF MICROORGANISMS:
Staphylococcus aureus → pink to mauve
Other bacteria → Colourless, blue or inhibited

Food Industry: Human beings are the main reservoir of S. aureus. A carrier contaminates the surrounding environment when coughing, sneezing and by touching food with a hand having a staphylococcus-infected lesion. It is often found in the environment and on food preparation surfaces and also in certain uncooked foods (dairy products, salads, sandwiches...). It is important to check the presence of S.aureus before and after the foodstuff sterilisation process.
Clinical relevance: S. aureus is the leading cause of skin and soft tissue infections and can also cause serious infections such as bloodstream infections, pneumonia, or bone and joint infections.

Other package sizes: bulk on request.