Usually only one type of colony will be seen on the Mannitol salt agar plate. Carefully look at the color, size, and shape of the bacterial colonies, and you should be able to determine the number of different types of bacteria in your sample. Record your results in the table below.
Yes or No?
+ Blue or
Based on these results, is this organism Staphyloccoccus ? If so, which species ( aureus or epidermidis ) is it?
Streak PlatesFigure 1