A 100 ml sample of water is ?ltered through a sterile membrane, and the membrane is transferred to a plate of m-Endo agar. Following overnight incubation at 37°C, 57 green metallic colonies appear. The coliform count is _______.

Question

Quizplus · Accepted Answer

The coliform count is determined by the number of colonies that grow on the agar plate, which in this case is 57 colonies from a 100 ml sample. Therefore, the coliform count is 57 per 100 ml.

A 100 Ml Sample of Water Is ?Ltered Through a Sterile