Index:
[thread]
[date]
[subject]
[author]
From: dr. jack correia <jcorreia@fiona.umsmed.edu>
To : rasmb@bbri.eri.harvard.edu
Date: Thu, 9 Jun 94 12:19:23 -0500
Re: Windows
John Philo has informed me that NaF under acid conditions will
necessarily have some HF present that will attack quartz and he suspects
other types of windows! [What is the pK of HF?] The etching is most likely
irrevsersible - I still wonder if repolishing is possible? Dave Yphantis/
Jeff Lary caution against using NaF with filled Epon centerpieces, MgF2
can be a problem! We are using Kel F centerpieces!!
This event has caused me to look at the Beckman literature on solvents!
I have not yet found any precautions for windows! Does such a list exist
either in the Beckman literature or in any other source on solvents to be
avoided with quartz?????
This has been an expensive learning experience. I cann't even get mad
at my student for doing it - I suggested the NaF!!
Jack
Index:
[thread]
[date]
[subject]
[author]