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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>We have something like 700-800 of those little bottles as each research group keeps their own supply bottle. The bottles are filled/refilled from 1 ltr. source bottles. We teach them to wipe clean the top of the bottle with acetone each time they pour from it. How they deal with their own bottles is up to them, but most of them get the idea.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>We provide clean disposable plastic pipettes for dispensing. If they are careful they can avoid particulate issues, but keeping the bottle at least half filled and staying away from the bottom with the pipette helps too.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Garry J. Bordonaro<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Microlithographic Engineer<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cornell NanoScale Facility<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cornell University<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>250 Duffield Hall<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Ithaca, NY 14853-2700<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>(607) 254-4936<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu] <b>On Behalf Of </b>Andrew R. Lingley<br><b>Sent:</b> Wednesday, September 26, 2012 12:18 PM<br><b>To:</b> Michael Khbeis; labnetwork@mtl.mit.edu; ccgrot01@louisville.edu<br><b>Subject:</b> Re: [labnetwork] How do you dispense photoresist?<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>Hello all,<br><br>We had the same problem with resist drying on bottle cap threads. Recently, we have switched to 50 mL non-lubricated polypropylene syringes and have had good results with a variety of resists. They are a little expensive (~$3/syringe), but we have found that they can be cleaned and reused. Also, although we haven't needed to yet, it seems that the plunger seal is tight enough that we could probably filter the resist if we chose. We decant directly into the syringes, but as they do not block UV we store a dozen or so in the fridge in aluminum foil that can be taken out as needed. Users have found this method to be very easy and reliable, and it seems that particulate contamination is less of an issue. Please email me if you would like specifics about the syringes we use or our dispensing procedures. Thanks.<br><br>Andy<br><br><o:p></o:p></p><div><p class=MsoNormal>On Tue, Sep 25, 2012 at 8:29 PM, Michael Khbeis <<a href="mailto:khbeis@uw.edu" target="_blank">khbeis@uw.edu</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal>Andy,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>You should respond with what you've been doing. <o:p></o:p></p><div><p class=MsoNormal>Dr. Michael Khbeis<o:p></o:p></p></div><div><p class=MsoNormal>Associate Director<o:p></o:p></p></div><div><p class=MsoNormal>Microfabrication Facility (MFF)<o:p></o:p></p></div><div><p class=MsoNormal>University of Washington<o:p></o:p></p></div><div><p class=MsoNormal>Fluke Hall, Box 352143<o:p></o:p></p></div><div><p class=MsoNormal>(O) <a href="tel:206.543.5101" target="_blank">206.543.5101</a><o:p></o:p></p></div><div><p class=MsoNormal>(C) <a href="tel:443.254.5192" target="_blank">443.254.5192</a><o:p></o:p></p></div><div><p class=MsoNormal><a href="mailto:khbeis@uw.edu" target="_blank">khbeis@uw.edu</a><o:p></o:p></p></div><p class=MsoNormal>Sent from my iPhone<o:p></o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>Begin forwarded message:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal style='margin-bottom:12.0pt'><b>From:</b> Caitlin Grothaus <<a href="mailto:ccgrot01@louisville.edu" target="_blank">ccgrot01@louisville.edu</a>><br><b>Date:</b> September 25, 2012, 10:50:10 AM PDT<br><b>To:</b> <a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br><b>Subject:</b> <b>[labnetwork] How do you dispense photoresist?</b><o:p></o:p></p></div></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>Hello Everyone,<o:p></o:p></p><div><p class=MsoNormal>We're currently re-examining our current method of dispensing photoresist onto wafers for spinning. Currently we are decanting larger bottles into small amber dropper bottles but have had some issues (mainly with resist drying around the seal of the bottle and causing contamination).<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>What do you use at your lab? If you do use amber dropper bottles, are there any steps you take to try to prevent this contamination from happening?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks!<o:p></o:p></p></div><div><p class=MsoNormal>Caitlin<o:p></o:p></p></div></div></blockquote><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal>_______________________________________________<br>labnetwork mailing list<br><a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br><a href="https://www-mtl.mit.edu/mailman/listinfo.cgi/labnetwork" target="_blank">https://www-mtl.mit.edu/mailman/listinfo.cgi/labnetwork</a><o:p></o:p></p></div></blockquote></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br><br clear=all><br>-- <br>Dr. Andrew Lingley<br>Sr. Microfabrication Engineer<br>Microfabrication Facility (MFF)<br>Cell - <a href="tel:%28360%29-870-8263" target="_blank">(360)-870-8263</a><br><a href="mailto:alingley@uw.edu" target="_blank">alingley@uw.edu</a><o:p></o:p></p></div></body></html>