http://confocal-microscopy-list.275.s1.nabble.com/Unclogging-corroded-laser-coolant-lines-tp7584479p7584485.html
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> I'm not sure I would trust radiator flush. The metals and plastics used in
> the laser might be more delicate than those used in a car radiator. I would
> only resort to something like that if nothing else worked.
>
> Craig Brideau
>
> On Wed, Nov 25, 2015 at 5:46 PM, Mark Cannell <
[hidden email]>
> wrote:
>
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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 <
[hidden email]> wrote:
>>
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>>>
>>> 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 <
[hidden email]>
>> wrote:
>>>
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>>>>
>>>> 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
>>
>>
[hidden email]
>>
Mark B. Cannell Ph.D. FRSNZ