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<div class="moz-cite-prefix">Dear All, (you can forward this to
others who might be interested.)<br>
<br>
The message below is a compilation of information about a Varian
Gas Chromoatograph (GC) unit that is available as a donation to a
worthy recipient. All contacts should be directed to Mr. Jere
Hitchcock of Atlanta, GA, who has the unit.<br>
<br>
<pre class="moz-signature" cols="72">Doc / Dr TLUD / Prof. Paul S. Anderson, PhD
Email: <a class="moz-txt-link-abbreviated" href="mailto:psanders@ilstu.edu">psanders@ilstu.edu</a>
Skype: paultlud Phone: +1-309-452-7072
Website: <a class="moz-txt-link-abbreviated" href="http://www.drtlud.com">www.drtlud.com</a></pre>
On 6/16/2014 10:02 PM, Jere Hitchcock wrote:<br>
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<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Arial","sans-serif"">Look
up on Google the following: <span style="color:red">Varian
gc models 3500 </span>It is very similar to the 3400
series in this section. You can get a good front view of
the unit on the 3400. Looks almost exactly like that one.
Your can read up on the unit and how it works. Basically it
sends a slug of gas into the unit and it travels some 50
foot (maybe 50 yards depends on column) inside a copper
column. The material in the column divides and slows down
the various components in the gaseous mix. And ionizes
(burns) the product at exit. This produces an electrical
signal which is proportional to the volume of the product
and the molecular weight. As I remember the lighter
compounds are first out the heavier ones are last out.. this
gives you a volume (shown in the Y axis) of each gas (or
compound) in the mix and the location on the graph (on the x
axis) determines the compound. Pretty simple concept.<o:p></o:p></span></p>
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<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D">Inclosed
for you here is the link on my dropbox for you to access the
pictures of the gc…</span></p>
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align="left" valign="top" width="454">From Jere:<br>
<br>
"Paul, here are the pictures of the gc maybe this will
help you. the air sample is extracted from the source via
a micro syringe and is the sample is then inserted into
the gc. they can be rooms apart or miles apart. this is an
ion flame (I think) unit. it is a Star 2500 (?)"<br>
<br>
<a
href="https://www.dropbox.com/l/lLCy2hvD4ODS2SA9Z4ZU1t?">Click
here to view vARIAN GC</a><br>
<br>
(Jere shared these files using Dropbox. Enjoy!)</td>
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Jere allowed me to compile and edit his messages and to send them to
the Listservs, etc. He told me it is about 2 x 2 x 2 feet (cube),
maybe 100 lbs, and perhaps 10 years old, and in working condition
(he has checked the boards, etc.)<br>
<blockquote type="cite">
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D">Let
me [Jere] know your interest. I can possibly look up the
column which is currently in the unit and you can cross that
to see if it will separated the compounds you are interested
in defining. If not, you can get a column which meets your
requirements. It will require some carrier gas and that is
measured and delivered by the needle valves on the front of
the instrument. I do not know what other items you may need.
Some of the units are equipped with a printer this prints the
graph which comes out as the compounds are ionized. This unit
does not have one. Maybe you have one [printer] which will
work ???? At one time this was in the 5 figures of cost. My
price is FREE. It has some value as scrap metal as it
contains some copper and other metals. Best wishes, Jere<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span><br>
</p>
</blockquote>
Persons with useful comments about such equipment can post to the
Listservs. But note that Jere is NOT on the Listservs and will not
be in those discussions. Therefore, please make your contacts
directly to Jere who can be reached at 770-402-2738 and Jere
Hitchcock <a class="moz-txt-link-rfc2396E" href="mailto:jereh@jcranch.com"><jereh@jcranch.com></a> <br>
<br>
Paul<br>
<br>
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