condenser adjustment allow you to focus the optics properly into
your eye
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The condenser focus knob on a microscope is used to focus the
light from the illuminator on to the specimen. It is found under
the stage in conjunction with the iris diaphragm.
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Liebig condenser, Vigreaux column, Snyder column, West
condenser, Allihn condenser, Graham condenser, Dimroth condenser,
Friedrichs condenser.
There are no shortage of these!
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Which condenser are you asking about? There are a couple things
that are called a condenser.