From booth at snf.stanford.edu  Wed Jul  9 09:28:11 2003
From: booth at snf.stanford.edu (Len Booth)
Date: Wed, 09 Jul 2003 09:28:11 -0700
Subject: Use of Freon 13B1 in Drytek 1 & 2
Message-ID: <3F0C429B.BA9C6E40@snf.stanford.edu>

Drytek1 & Drytek2 users -

        Freon 13B1 (like Freon 115) is no longer available
for purchase in the US, as it is unkind to the environment.
That is why the current bottle of F-13B1 will not be replaced.

        Currently our Dryteks use one MFC that must be switched
between F-13B1 & F-22 gas sources.

        I would like to know if there are any users
still using recipes that include F-13B1 in either  
Drytek1 or Drytek2.  If not, we can eliminate the F-13B1
and dedicate one MFC to use only Freon-22, and have the
digital readouts for F-22 flow read directly in sccm,
and no longer have to use a multiplication factor with
the readout value, to determine real sccm of F-22 flow.

        If you are still using any recipes with F-13B1
please reply to me within the next two weeks (by July 25)
so we can decide if F-13B1 can be eliminated.

                thank you,
                Len


From masafumi at stanford.edu  Fri Jul 11 16:04:32 2003
From: masafumi at stanford.edu (masa)
Date: Fri, 11 Jul 2003 16:04:32 -0700
Subject: Cancelled Reservation Today @4:30pm to 5:30pm
Message-ID: <20030711160341.4F4F.MASAFUMI@stanford.edu>


Masa