Taking Care of the Microscope
Cotton Swabs, Alcohol (Ethanol or Methanol)
Window Cleaner,10X hand magnifier
Wipes (tissues or similar)
1. Clean excess oil from oil objectives with cotton swabs and alcohol.
1. Remove the objectives one at a time by unscrewing them. Clean the front lens using
cotton swabs and alcohol. Dip the swab in the alcohol and shake it once or twice so
that it is moist. Start from the center of the lens wipe in a circular pattern until you reach
the edge. Throw the swab away and examine the front with the magnifier. If it is still
dirty then repeat. If the dirt on the objective is water based then dip the swab in window
cleaner. Replace each objective by screwing them back in but never more than finger
tight. If the objective looks hazy at any time then clean it.
2. Remove the slide holder by unscrewing the thumbscrews that hold it on and wipe
the stage with a wipe dipped in alcohol then repeat with window cleaner. Clean the
back of the slide holder and replace the slide holder and tighten the screws but no more
than finger tight.
3. Use a cotton swab and alcohol clean the top of the condenser.
4. Use a cotton swab and window cleaner and clean each eyepiece.
5. Use a wipe and window cleaner wipe the in-base lens.
Always start focusing using a low power objective and go up to a high power one. This prevents
the high power objective from hitting the slide and hurting the high power objective.
-Clean inside an objective
-Clean inside an eyepiece
-Clean inside the condenser
-Clean an optical surface with a dry wipe or swab.
copyright 1995, Kevin J. Cunningham