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Hi,</div>
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We use grocery-store purchased distilled water. This is what our microscope company engineers always use, and we've had no issues with corrosion. One system had a nasty, hard to kill cyanobacterial infection, but that's the only issue here in 20+ years.<br>
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David Gene Morgan<br>
Electron Microscopy Center<br>
047E Simon Hall<br>
IU Bloomington<br>
812 856 1457 (office)<br>
812 856 3221 (3200)<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> 3dem <3dem-bounces@ncmir.ucsd.edu> on behalf of Tim Gruene <tim.gruene@univie.ac.at><br>
<b>Sent:</b> Friday, February 9, 2024 6:31 PM<br>
<b>To:</b> Ruben Diaz <pindusito@gmail.com><br>
<b>Cc:</b> 3DEM Mailing List <3dem@ncmir.ucsd.edu><br>
<b>Subject:</b> [External] Re: [3dem] Cooling water</font>
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<div class="PlainText">This message was sent from a non-IU address. Please exercise caution when clicking links or opening attachments from external sources.<br>
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<br>
Dear Ruben,<br>
<br>
we use singly distilled water, buffered to pH 7.5-pH8 with baking<br>
powder or Na-phosphate buffer. It should not be sour to prevent<br>
corrosion. We also add Thermoclean Blue to keep algae and bacteria<br>
out, and refresh the Thermoclean annually.<br>
<br>
Best,<br>
Tim<br>
<br>
<br>
On Fri, 9 Feb 2024 14:32:26 -0800 Ruben Diaz <pindusito@gmail.com><br>
wrote:<br>
<br>
> Hi all,<br>
><br>
> I have a silly question: what type of water do people use to keep the<br>
> microscopes happy and chilled? We have already had two instances of<br>
> corrosion on the cameras (K3), which have resulted in uber-pricey<br>
> repairs, but the other parts of the microscopes seem perfectly fine<br>
> and corrosion-free. The water does not show any unusual hardness or<br>
> presence of ions that could be blamed for the corrosion. I am very<br>
> interested to hear if other people have faced similar problems, and<br>
> how they have been solved.<br>
><br>
> Ruben.<br>
<br>
<br>
<br>
--<br>
--<br>
Tim Gruene<br>
Head of the Centre for X-ray Structure Analysis<br>
Faculty of Chemistry<br>
University of Vienna<br>
<br>
Phone: +43-1-4277-70202<br>
<br>
GPG Key ID = A46BEE1A<br>
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