Count colonies in the right way?

Question

I use Rose bengal agar cloramfenicol for search yeast and molds for inclusion in petri plat. Which is the method correct for count? I'm not sure if i count everything or only the bigger one?

Answer 1

Rose Bengal Agar should inhibit most bacteria, and it does inhibit the overgrowth of some molds, so the size of the colony doesn't matter. Count all the colonies that have grown, regardless of size.

Hope that helps.

Connie