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I wonder if 2 part automotive radiator flush would be the best option?

HTH

Mark


On 23/11/2015, at 10:23 pm, Craig Brideau <[log in to unmask]> wrote:

> *****
> 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've used household vinegar for this, or you can make up 5% acetic acid
> from lab stock. If you can get any flow at all, just keep running solution
> through it. If you're lucky, the vinegar will dissolve out any mineral
> deposits and also help loosen up any biological gunk. Once you have things
> flowing well, flush with regular water. Finally, put Optishield or similar
> into your final coolant water to help keep this from happening in the
> future. I'm sure others will chime in with their own magic recipes for
> loosening up stuff like this, so give it all a try and you should hit on
> something that works.
> 
> Best of luck!
> 
> Craig Brideau
> 
> On Mon, Nov 23, 2015 at 2:46 PM, Michael Giacomelli <[log in to unmask]> wrote:
> 
>> *****
>> 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
>> 

Mark  B. Cannell Ph.D. FRSNZ
Professor of Cardiac Cell Biology
School of Physiology &  Pharmacology
Faculty of Biomedical Sciences
University of Bristol
Bristol
BS8 1TD UK

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