*****
To join, leave or search the confocal microscopy listserv, go to:
http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
Post images on http://www.imgur.com and include the link in your posting.
*****

I recently discovered an old laser in storage.  Unfortunately the
previous users had not drained the coolant lines, resulting in several
years corrosion blocking the lines.  I flushed them out as best I
could and found a grey metal slurry that was fairly thick in place of
what was once the coolant.  Unfortunately, even with flushing I can't
flow anything through the system using a normal thermotek chiller.

Are there any options in this situation to unclog a laser?  Looking at
the material in the line, its fairly diffuse and does not appear all
that solid.  Is it possible to use something like a weak acid to
dissolve any solid material blocking the line?  Or some other
solvent/cleaner?

Mike