Ultra Optics MR3 Standard Operating Procedure page 22

Flushing Coating System
Continued
With the container still positioned under the
filter, loosen the top bleeder cap on the filter
to drain the remaining coating out of the filter
and into the container through the elbow on
the bottom.
If the coating is contaminated, flush the
system with Acetone.
With the tubing still disconnected from the
bottom of the filter, pour Acetone into the
coating bowl as you would with coating.
Follow the same procedure to drain Acetone,
but drain into a separate container from the
coating.
**DO NOT RUN ACETONE THROUGH
THE FILTER. JUST DRAIN INTO A WASTE
CONTAINER.**
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