A Petroff-Hauser Counting Chamber Is A(n)

question 10

Multiple Choice

A Petroff-Hauser counting chamber is a(n)

• A) glass slide containing an etched grid for counting microbes directly using a microscope.
• B) apparatus that traps bacterial cells on a membrane filter where they can be counted.
• C) device that measures the amount of light that passes through a culture.
• D) device used to count numbers of bacterial colonies on a Petri plate.
• E) device that counts cells as they interrupt an electrical current.