Fw: [ccp4bb]: a crystal moubting problem

["Flip Hoedemaeker" <hoedemae@chem.leidenuniv.nl>]

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Ok, I did such a search, and the stuff is sold by SIGMA-Aldrich:

 317993 FOMBLINŽ Y HVAC 140/13, perfluoropolyether vacuum-pump oil, average
M.W. 6500
    69991-67-9

 317969 FOMBLINŽ Y HVAC 18/8, perfluoropolyether vacuum-pump oil, average
M.W. 2800
    69991-67-9

 317977 FOMBLINŽ Y HVAC 25/9, perfluoropolyether vacuum-pump oil, average
M.W. 3300
    69991-67-9

 317985 FOMBLINŽ Y HVAC 40/11, perfluoropolyether vacuum-pump oil, average
M.W. 3900
    69991-67-9

 317926 FOMBLINŽ Y LVAC 06/6, perfluoropolyether vacuum-pump oil, average
M.W. 1800
    69991-67-9

 317934 FOMBLINŽ Y LVAC 14/6, perfluoropolyether vacuum-pump oil, average
M.W. 2500
    69991-67-9

 317942 FOMBLINŽ Y LVAC 16/6, perfluoropolyether vacuum-pump oil, average
M.W. 2700
    69991-67-9

 317950 FOMBLINŽ Y LVAC 25/6, perfluoropolyether vacuum-pump oil, average
M.W. 3300
    69991-67-9

Flip
----- Original Message -----
From: "Harry Powell" <harry@mrc-lmb.cam.ac.uk>
To: <ccp4bb@dl.ac.uk>
Sent: Friday, September 01, 2000 10:56 AM
Subject: Re: [ccp4bb]: a crystal moubting problem


> ***  For details on how to be removed from this list visit the  ***
> ***    CCP4 home page http://www.dl.ac.uk/CCP/CCP4/main.html    ***
>
> On Thu, 31 Aug 2000, Alan Tunnicliffe wrote:
>
> > ***  For details on how to be removed from this list visit the  ***
> > ***    CCP4 home page http://www.dl.ac.uk/CCP/CCP4/main.html    ***
> >
> > Hi Guan
> >
> > How do you want to collect your data, room temperature or 100K ?
> > Here is a technique which may help in either case.
> >
> > Before trying to remove any crystals from your drop,
> > try covering the whole drop with parafin oil, then
>
> I've found that perfluoropolyether oils work even better than paraffin
> oils. Unfortunately, it's so long since I've bought any that the one I
> used is no longer sold :-( However, a search for me and perfluoropolyether
> on dejanews might throw up a reference to an active supplier!
>
> Harry
> --
> Dr Harry Powell, MRC Laboratory of Molecular Biology, MRC Centre, Hills
> Road, Cambridge, CB2 2QH
>
>