82
12. Care of the Microscope
Cleaning Glass Surfaces
Remove dust on glass surfaces with a fine, dry
and fat-free hair brush, by blowing with a blow
bag or vacuum suction.
Carefully remove stubborn dirt on glass
surfaces with a clean cloth moistened with
distilled water. If the dirt still can not be
removed, use pure alcohol, chloroform or
benzine.
Cleaning Objectives
Caution!
The objective may not be unscrewed during
cleaning. If damage appears on inner sur-
faces, the objectives must be sent to your
Leica subsidiary for repair. We also advise
against cleaning the inside surfaces of the
eyepieces.
The front lenses of objectives are cleaned as
described under "Cleaning Glass Surfaces". The
upper lens is cleaned by being blown off with a
pneumatic pump.
!
Removing Immersion Oil
Caution!
Follow safety instructions for immersion oil!
First, wipe off the immersion oil with a clean
cotton cloth, and then re-wipe the surface
several times with ethyl alcohol.
12.3 Handling Acids and Bases
For examinations using acids or other aggres-
sive chemicals, particular caution must be
taken.
Caution:
Be absolutely certain to prevent the optics
and mechanical parts from coming into con-
tact with these chemicals.
