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

question 2

Multiple Choice

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 _______.

• A) acceptable for drinking water and recreational use
• B) acceptable for recreational use but too high for drinking water
• C) too high for both drinking water and recreational use

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