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Coverslips
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Coverslips placed over the top of mounting media, such as
20% KOH or liquid paraffin, provide a flat surface giving
greatly improved resolution and giving lens protection when
using the dry objectives.
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- They are not generally suitable for use with immersion oil as
immersion objectives are designed to operate very close to the
specimens
- Try to spread out and flatten specimens so that the depth of
the mountant, e.g. paraffin, is as little as possible whilst still
covering the entire specimen. This will save time in focusing
up and down and give better resolution
- Ensure that the specimen is not too crowded with material. If
necessary divide it into two or more preparations. Examination
of a thin specimen is much quicker and more accurate
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