Tsunami - Beckman Institute Laser Resource Center

Tsunami
Figure 9-1: Drop and Drag Method.
Figure 9-2: Lens Tissue Folded for Cleaning
3. For stubborn contaminants and to access hard-to-reach places, use a
tissue in a hemostat to clean the optic.
a. Fold a piece of tissue in half repeatedly until you have a pad about
1 cm square, and clamp it in a plastic hemostat (Figure 9-2).
CAUTION
While folding, do not touch the surface of the tissue that will contact the
optic, or you will contaminate the solvent.
b. If required, cut the paper with a solvent-cleaned tool to allow access
to the optic.
c. Saturate the tissue with acetone or methanol, shake off the excess,
resaturate, and shake again.
d. Wipe the surface in a single motion.
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