General description
ReadyPlate™ CT Baird-Parker Agar contact plates provide a ready-to-use method for environmental monitoring of surfaces in critical clean rooms and isolators.
The Baird-Parker medium attains its selectivity with potassium chloride, lithium chloride, and glycine. Sodium pyruvate is essential to both recovery of damaged Staphylococcus aureus cells and their subsequent growth. Agar is the solidifying agent.
With added egg yolk tellurite emulsion, coagulase-positive staphylococci form black or grey colonies due to tellurite reduction with or without egg yolk reaction. Egg-yolk reaction is shown by characteristic zones and rings formed as a result of lipolysis and/or proteolysis.
According to EN ISO 6888-1, the addition of sulfamethazine is advised to suppress the growth and swarming of Proteus spp. if these are suspected in the test sample.

Application
ReadyPlate™ CT Baird-Parker Agar contact plates are suitable for the isolation, presumptive identification, and enumeration of Staphylococcus aureus from sampled surfaces as well as other materials like food and animal feed.