Technical data

5 Which Cleaning Procedure should I use ?
40 Cleaning Procedures
Procedure I
How to clean optical devices which are
sensitive to mechanical stress and pressure
Some optical devices, such as the Agilent
81000BR Reference Reflector, which has a
gold plated surface, are very sensitive to
mechanical stress or pressure. Do not use cot-
ton swabs, soft tissues or other mechanical
cleaning tools, as these can scratch or destroy
the surface.
Preferred Procedure
Use the following procedure on most occasions.
1 Blow away any dust or dirt with compressed air.
Procedure for Stubborn Dirt
To clean devices that are extremely sensitive to mechanical
stress or pressure you can also use an optical clean polymer
film. This procedure is time consuming, but you avoid scratch-
ing or destroying the surface.
1 Put the film on the surface and wait at least 30 minutes to
make sure that the film has had enough time to dry.
2 Remove the film and any dirt with special adhesive tapes.
Alternative Procedure
For these types of optical devices you can often use an ultra-
sonic bath with isopropyl alcohol. Only use the ultra-sonic bath
if you are sure that it won’t cause any damage to any part of
the device.
1 Put the device into the bath for at least three minutes.
2 Blow away any remaining liquid with compressed air. If
there are any streaks or drying stains on the surface, repeat
the cleaning procedure.
cleaning.book Page 40 Wednesday, May 22, 2002 5:16 PM