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Appendix E. Cleaning Procedure
Other Cleaning Tools
Other Cleaning Tools
To examine devices you also require:
Microscope
Select a microscope with a magnification range of between 50X
and 300X. These should be available from photographic stores or
laboratory suppliers.
Ensure that the light source of the microscope is flexible. This helps
you to examine your device closely and from different angles.
A microscope allows you to determine the type of dirt on your
device and its extent. Then you can choose the correct cleaning
procedure and later to examine the results of cleaning. With a
microscope you can also determine if your optical device is
scratched.
Ultrasonic bath
These are typically available from photographic stores or laboratory
suppliers.
An ultrasonic bath very gently removes greasy and other stubborn
dirt from optical devices.
Only use an ultrasonic bath with isopropyl alcohol, as other
solvents can damage or dirty your optical device.
Warm water and liquid soap
Use water only if you are sure that your optical device will not
corrode or be damaged. Do not use hot water, as this can lead to
mechanical stress that can damage your optical device. Ensure that
your liquid soap has no abrasive properties or perfume in it, as these
can scratch or damage your optical device. Do not use normal
washing-up liquid, as it can leave behind an iridescent film.
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