16
VIII Care and maintenance
1
Lenses and filters
•
To clean lens surfaces or filters, first remove dust using compressed air. If dust still persists, use a
soft/clean brush or gauze.
•
A soft gauze or lens tissue lightly moistened with pure alcohol should only be used to remove grease or
fingerprints.
•
Use petroleum benzine to clean immersion oil.
•
Use petroleum benzine only to remove immersion oil from objective lenses.
•
Because petroleum benzine and absolute alcohol are both highly flammable, be careful handling around
open flame.
•
Do not use same area of gauze or tissue, to wipe more than once.
2
Cleaning of painted or plastic components
•
Do not use organic solvents (thinners, alcohol, ether, etc.). Doing so could result in discoloration or in
the peeling of paint.
•
For stubborn dirt, moisten a piece of gauze with diluted detergent and wipe clean.
3
When not in use
•
When not in use, cover the instrument with dust cover and store in a place low in humidity where mould
is not likely to form.
•
Store the objectives, eyepieces and filters in a container or desiccator with drying agent.
