<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">Dear Colleagues,<DIV><BR class="khtml-block-placeholder"></DIV><DIV>Recently, I used aluminum centerpieces for the first time and found what appears to be corrosion on both the centerpiece as well as the cell housing. The cell was allowed to sit for about 1 week after the run was complete before cleaning. I did not notice substantial leaking (the sample and reference channels were not noticeably depleted), but clearly some leaking must have taken place. My buffer is 10 mM phosphate, 200 mM NaCl, pH 7.2.</DIV><DIV>If anyone has any advice regarding 1) cleaning off the corrosion, 2) whether this cell is still usable, or 3) how to prevent this in the future, I would appreciate it.</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Thank you,</DIV><DIV>James</DIV><DIV><BR><DIV> <SPAN class="Apple-style-span" style="border-collapse: separate; border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; text-align: auto; -khtml-text-decorations-in-effect: none; text-indent: 0px; -apple-text-size-adjust: auto; text-transform: none; orphans: 2; white-space: normal; widows: 2; word-spacing: 0px; "><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">-------------------------------------------------------------------------------------------</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">E. James Petersson email:<SPAN class="Apple-converted-space"> </SPAN><A href="mailto:e.james.petersson@yale.edu"><FONT class="Apple-style-span" color="#0020DE"><SPAN class="Apple-style-span" style="color: rgb(0, 32, 222); -khtml-text-decorations-in-effect: underline; ">e.james.petersson@yale.edu</SPAN></FONT></A></DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Department of Chemistry Lab: 203-432-8940</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Yale University Cell: 626-644-1091</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">225 Prospect St. Fax: 203-432-3486</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">New Haven, CT 06511</DIV><DIV style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; "><BR class="khtml-block-placeholder"></DIV><BR class="Apple-interchange-newline"></SPAN> </DIV><BR></DIV></BODY></HTML>