Versión/Version 1; Jul 2017
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8.
Recommendations
When using the oil immersion objective you should notice the following:
a) In order to use all the numerical aperture of the oil immerson objective:
- Pre-focusing: Focus the sample with the objective with less magnification (4x).
- Put a drop of oil immersion on the cover glass.
- Rotate the nosepiece, place the immersion objective and arrange the focusing with the fine
adjustment knob.
b) You should avoid air bubbles in the oil so as not to spoil the resulting image. To do so you
should move the pre-focusing control up and down to make the oil layer uniform.
c) Turn the nosepiece and then locate the oil immersion objective; you can adjust focusing
with the fine knob.
d) We highly recommend drying the frontal lens after each use. You should never use a duster.
Instead of it you should use specific optics cloth and liquids that are sold to this purpose (as
the ones for cleaning sunglasses or binocular lenses). You should not submerge the objective in
any liquid, as this could provoke the lens' detachment. Depending on the observer preferences
the tension of the coarse adjustment knobs can be modified, since it is provided with a tension
adjustment ring that is located next to the right coarse knob of the microscope. However, you
should avoid loosening it excessively, as this could produce an involuntary fall of the stage and
so provoke accuracy deterioration.
9. Accessories
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Power cord
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Dust cover
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Blue filter (32mm)
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Spare fuse 2A ( 5x20mm)
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User manual
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Dipping oil immersion if the microscope incorporates the 100x lens.