Isogeochemists:

I originally sent this message directly to Pier, but it may be of interest
to some of you also.

Steve


>Date: Wed, 24 Feb 1999 08:07:27 -0500
>To: [log in to unmask]
>From: "Stephen S. Howe" <[log in to unmask]>
>Subject: Re: About Vycor glass
>Cc:
>Bcc:
>X-Attachments:
>
>Pier:
>
>Vycor is indeed a registered trademark of Corning.  It is 96% silica glass
>and is used as a substitute for quartz glass in some high-temperature
>applications.  It is rated as having a continuous operating temperature of
>900°C, an annealing point of 1020°C, and a softening point of 1530°C.
>
>Corning has a special e-mail address for questions about Vycor:
>
>[log in to unmask]
>
>Hope this helps!
>
>Steve
>
>
>>Dear all,
>>
>>I try to find out what vycor glass in fact is standing for. It is used
>>- mostly in the USA I think - as an 'alternative' for quartz glass.
>>However, it is quoted in a couple of papers as a different glass type.
>>In any case, it is not as once I thought, just a factory name for a
>>common product (quartz glass).
>>Our glass blowers could not give the answer to: what is vycor
>>precisely? And also I asked other people, who did not know exactly
>>either.
>>Who can inform me about this matter - I want to know after all.
>>Or can anybody give me an e-mail address to a Vycor provider, so I can
>>ask there about specifications.
>>The obvious question, nobody ask because it is obvious, needs to be
>>asked by somebody after all....
>>
>>Regards to all,
>>Pier de Groot.
>>**************************************************************
>>Dr. P.A. de Groot
>>University of the Witwatersrand
>>Economic Geology Research Unit
>>Department of Geology
>>Private Bag 3
>>2050 Johannesburg
>>South Africa
>>Tel.    +27 11 7162564
>>Fax.    +27 11 3391697
>>E-mail  <[log in to unmask]>
>>
>>Visit the combined HOME-PAGE of EGRU-Geology on the Internet:
>>         http://www.wits.ac.za/science/geology/index.htm
>>**************************************************************
>
>
>

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