Baird Parker Agar – base medium for the enumeration of coagulase positive Staphilococci acc. to ISO6888
- Format: 500 g
- Code: TN1104
- Technology: Culture media and ISO confirmation tests
- Application: Food/Water microbiology
- Tag/Filter: Staphilococcus
The Baird-Parker medium is the medium used for the enumeration (with confirmation of colonies) of coagulase-positive staphylococci (Staphylococcus aureus and other species) in products intended for human or animal consumption and swimming pool waters according to ISO6888 norm and other national microbiological standard methods. The principle of the medium relies on the ability of Staphylococcus aureus to reduce tellurite (black colonies), to provoke proteolysis of egg yolk (clear halo around colonies), and to render the proteolysis zone opaque (lipase activity). Due to its lithium chloride and potassium tellurite content this medium inhibits other bacteria. Sulfamethazine further increase selectivity against Proteus species. Colonies isolated from Baird-Parker plates shall be confirmed growing them in BHI broth and testing the coagulase activity with the Rabbit Plasma test. For confirmation it is also possible to use the latex test Pastorex Staph Plus or to streak on a Baird-Parker with RPF agar plate. Baird-Parker base medium must be supplemented with sulfamethazine and egg yolk emulsions with potassium tellurite or with RPF.
- Format: 500 g
- Code: TN1104
- Technology: Culture media and ISO confirmation tests
- Application: Food/Water microbiology
- Tag/Filter: Staphilococcus
