THE VIRTUAL EDGE: Lab 1 Introduction to Microscopy

Turbidity

The cloudy appearance of a liquid medium due to the presence of bacteria.  You can "estimate" the number of bacteria per mL by using the table below.

Turbidity
# Bacteria per mL
Example
None
0 - 106
Light
107
Moderate
108
*Heavy
109

*Usually bacterial populations do not exceed 3 x 109 bacteria/mL when grown in liquid media.

Lab 1 / Ubiquity of Microorganisms / Microscopy

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Rachel Watson, M.S.
AG 5010
766-3524
Cell: 307-760-2942
rwatson@uwyo.edu

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