3M Food Safety (Microbiology) offers Petrifilm staph express count plates that are faster than standard methods and provide confirmed results in 22 hours.
Easy to interpret, the 3M Petrifilm staph express count plates feature an indicator that identifies S. aureus by producing red-violet colonies.
Easy to differentiate even with high background, the Petrifilm staph express disk can be used to identify S. aureus from all suspect colonies.
The Baird Parker method is comparatively very difficult to read when high backgrounds are present.
A single Petrifilm plate is equivalent to the ISO three-plate Baird-Parker agar and tube coagulase method.
Offering a 22-hour result for both positives and negatives, the 3M Petrifilm staph express count plates do not require confirmation whereas the Baird Parker method requires confirmation, taking up to another 24 hours.