Microscope power for bacteria?

Lou (nospam) lj at 411.com
Wed Apr 14 19:10:47 EST 2004

 I'm helping out my daughter with a school experiment involving
bacteria response to different disinfectant applications.
I'm using a LW Scientific Observer II  4 - 10 - 40  scope.
400x seems just enough to see the critters, however, it doesn't magnify
enough to identify them.
I'm using a 10x eyepiece.
If I switch to a 16x eyepiece, thus giving me 640x, would this make much of
a difference? Is this oil immersion territory? How far can I go without
needing oil immersion?
Thanks for any info.

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