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Xylene works very well for hard to remove substances, but do not use a lot 
of it. Many small applications are better than one large application. 
Neutralize quickly with Sparkle glass cleaner & repeat.


>From: "S. Brunet" <[log in to unmask]>
>Reply-To: Confocal Microscopy List <[log in to unmask]>
>To: [log in to unmask]
>Subject: Cleaning objectives
>Date: Tue, 14 Nov 2006 16:22:45 -0600
>
>Search the CONFOCAL archive at
>http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>
>Hello to all,
>
>I have a user who mixed two immersion oil types (Immersol 518F and Cargille 
>37).
>  I tried to clean it with hexane (worked fine on the 37 oil before when 
>not
>contaminated with the 518F), acetone, methanol, and ethanol using Kodak 
>lens
>paper (lots of it).  (OK, I did not expect the last two solvents to 
>work...)
>The bulk is gone, but there is goop left on the lens.
>
>What else can I use?  It seems that 'I drag the goop around' when I clean 
>the
>lens.  I do not want to soak the oil immersion objective in an organic 
>solvent
>for longer than necessary.  This objective is heavily used and I am trying 
>to
>avoid buying a new one (and the down time of waiting for a new one).  
>Xylene
>does not sound good for the glue.  Toluene and glue... ?  CFCs?  Dawn soap?
>
>Regards,
>Sophie
>_______________________________________
>Sophie M.K. Brunet, Ph.D.
>Research Officer
>Optical Spectroscopist, Laser Systems and Applications
>[log in to unmask]
>306-966-1719 (office)   306-966-1702 (fax)
>_______________________________________
>Saskatchewan Structural Sciences Centre
>University of Saskatchewan
>Thorvaldson Bldg.
>110 Science Place
>Saskatoon, SK   S7N 5C9

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