o If other bacteria appear red-purple color, use the disk to Disk (the Disk out of the covers, Grab hold of the handle, flip the sheets of film on the Petrifilm's up and then put the Disk into the medium, lower the sheet film above the down, lightly onto the Disk). Bring in the 37 ± 10 c brewed in 3 h. If bacterial with the appearance of pink, then the conclusion positive (+) form, if there is no phenomenon whatever the conclusion (-) negative samples with Staphylococcus Aureus.
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