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If you see aluminum oxide then the aluminum is corroded and weak. You will never get a good seal especially at the speeds you will be running at </div>
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Rick </div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> RASMB <rasmb-bounces@list.rasmb.org> on behalf of Thomas Laue <Tom.Laue@unh.edu><br>
<b>Sent:</b> Friday, January 27, 2023 9:11:43 AM<br>
<b>To:</b> Nikola Wenta <nikola.wenta@googlemail.com><br>
<b>Cc:</b> rasmb@list.rasmb.org <rasmb@list.rasmb.org><br>
<b>Subject:</b> Re: [RASMB] Aluminum centerpiece cleaning recommendation?</font>
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Dear Niko- CsCl is readily soluble in water, so I suspect that what you are looking at is aluminum oxide, which is not soluble in any solvent. I am not sure that there is a way to remove it that does not involve abrasion. Best wishes, Tom From:
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<p class="x_MsoNormal"><span style="font-size:14.0pt; font-family:"Times New Roman",serif">Dear Niko-</span></p>
<p class="x_MsoNormal"><span style="font-size:14.0pt; font-family:"Times New Roman",serif">CsCl is readily soluble in water, so I suspect that what you are looking at is aluminum oxide, which is not soluble in any solvent. I am not sure that there is a way
to remove it that does not involve abrasion.</span></p>
<p class="x_MsoNormal"><span style="font-size:14.0pt; font-family:"Times New Roman",serif">Best wishes,</span></p>
<p class="x_MsoNormal"><span style="font-size:14.0pt; font-family:"Times New Roman",serif">Tom</span></p>
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<p class="x_MsoNormal"><b>From:</b> RASMB <rasmb-bounces@list.rasmb.org> <b>On Behalf Of
</b>Nikola Wenta<br>
<b>Sent:</b> Friday, January 27, 2023 5:01 AM<br>
<b>Cc:</b> rasmb@list.rasmb.org<br>
<b>Subject:</b> [RASMB] Aluminum centerpiece cleaning recommendation?</p>
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<p class="x_MsoNormal">Dear all,</p>
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<p class="x_MsoNormal">I want to use Aluminum centerpieces, but they appear to be crusted with CsCl. Could you please advise on a proper cleaning reagent to remove the crust? I have so far tried ultrasonications for 30 minutes in baths of water, EtOH, and 2%
Hellmanex...</p>
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<p class="x_MsoNormal">Your input would be gratefully appreciated!</p>
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<p class="x_MsoNormal">Best,</p>
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<p class="x_MsoNormal">Niko</p>
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