[RASMB] acetonitrile

[Stephen Harding]

Dear Andrew and Ariel
Tom Laue and myself have recently been having a private discussion about this after some epon based centerpieces were (very!) worse for wear after exposure to dimethylacetamide.
As Ariel says, Kel-F double sectors have been reliable at modest temperatures but Beckman don't make them any more.  Probably aluminium (not Al-epon) or titanium would do instead, but best to test them with the solvent in a beaker overnight.
If anyone not working on organics have any old ds KelF's (even old 30mm's) they'd like to get rid of or exchange for epons or even sell please let us know!
All best
Steve

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Steve Harding, National Centre for Macromolecular Hydrodynamics, University of Nottingham, Sutton Bonington LE12 5RD, UK. Tel: +44(0) 115 951 6148 (fax 6142); Mob: +44(0) 78110 90635; http://www.nottingham.ac.uk/Biosciences/People/steve.harding; http://www.nottingham.ac.uk/ncmh (next year is 25th anniversary!)

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From: rasmb-bounces at rasmb.bbri.org [rasmb-bounces at rasmb.bbri.org] On Behalf Of Ariel Lustig [ariel.lustig at bluewin.ch]
Sent: 20 September 2011 15:20
To: rasmb
Subject: [RASMB] acetonitrile

Dear  Andrew and & colleagues,
ten years  ago, when  I was  still active in my  AUC lab (now  retired), when I had
a solvent where I do not  know if it  attacks a certain centerpiece, I took a piece  of an old not more  usable centerpiece (or other AUC labs gave me such a piece),
and put it  in  a vessel with  the  liquid fo  one until  10 days and prooft if there  are no  sign of  swelling or other attacks...if not  I permit myself to  use  it.
In any  case  I had also all  kinds of Kel-F centerpieces that are usually resistant except
Flour components...yours  ariel
ariel.lustig at bluewin.ch<mailto:ariel.lustig at bluewin.ch>
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