Fig. 2A: Large Double-Lined Square of a Petroff-Hausser Counter.

The large, double-lined square holds a volume of 1/1,250,000 of a cubic centimeter. Using a microscope, the bacteria in the large square are counted.

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Microbiology Laboratory Manual by Gary E. Kaiser, PhD, Professor of Microbiology
is licensed under a Creative Commons Attribution 4.0 International License.
Last updated: August, 2017