Baird-Parker agar

[1] Staphylococcus colonies show up black in colour with clear zones produced around them.

[2] He developed this agar medium from the tellurite-glycine formulation of Zebovitz et al[3] and improved its reliability in isolating coagulase-positive staphylococci from foods.

Baird-Parker added egg yolk emulsion as a diagnostic agent and sodium pyruvate to protect damaged cells and aid their recovery.

[4] It is now widely recommended by national and international bodies for the isolation of coagulase-positive staphylococci.

[5] Baird-Parker agar is commonly used as a method for the enumeration of coagulase-positive staphylococci (Staphylococcus aureus and other species) in food and animal feedstuffs.