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Baird Parker Agar is used for detection and enumeration of Staphylococcus aureus in foods in a laboratory setting. Baird Parker Agar is not intended for use in the diagnosis of disease or other conditions in humans.

Baird Parker Agar was first described in 1962. It is a selective medium for the isolation and presumptive identification of coagulase-positive staphylococci. This medium is used extensively for detecting Staphylococcus aureus in foods, dairy products, and other materials. Coagulase-positive staphylococci can grow and reproduce in cosmetic products. These products are tested for the presence of coagulase-positive staphylococci using standard microbiological methods.


Formula Liter
Enzymatic Digest of Casein 10 g
Beef Extract 5 g
Yeast Extract 1 g
Lithium Chloride 5 g
Glycine 12 g
Sodium Pyruvate 10 g
Agar *17 g

*15 – 20 g according to gel strength
Final pH: 7.0 ± 0.2 at 25°C
Formula may be adjusted and/or supplemented as required to meet performance specifications.


Egg Yolk Tellurite, 100 mL (Egg yolk, 30%; Potassium Tellurite, 0.15%)


Chicken egg yolk & egg, 50% 
Tellurite Supplement (1%)


  1. Suspend 60 g of the medium in one liter of purified water.
  2. Heat with frequent agitation and boil for one minute to completely dissolve the medium.
  3. Autoclave at 121°C for 15 minutes.
  4. After cooling to 45 – 50°C, add 50 mL of Egg Yolk Tellurite Supplement. Alternatively, add 50 mL of Egg Yolk Emulsion and 10 mL of Tellurite Supplement (1%).
  5. Mix thoroughly before dispensing.

Order Details

Product # Product Description
7112A Baird Parker Agar, 500 g
7112T Baird Parker Agar, 5 kg