Trapping radioactive material from rotary-vane pump exhaust

swilbert@Imail.neorx.com
Mon, 04 Jan 99 18:04:16 PST

Hi all,

we are planning on analyzing samples containing trace amounts of
tritium-labelled compounds using our LC-LCQ system. I am looking for
advice on efficiently trapping possibly radioactive exhaust fumes
generated when ballasting the rotary-vane pump. Any help is greatly
appreciated.

Thanks!

Sibylle Wilbert
NeoRx Corp.
410 West Harrison Street
Seattle, WA 98119-4007
Phone: (206) 281-4001 ext.250

______________________________ Reply Separator _________________________________
Subject: Buffer make-up programs.
Author: "Scharin, Eric" <eric.scharin@Covance.com> at IMail
Date: 1/4/99 5:38 PM

I used to use a shareware program (of unknown origin) called "Buffer" to
aid in buffer make-up. You could pick an acid, input the desired pH (it
would tell you if you were out of range), ionic strength, molarity, and
temperature and it would output the quantities (per liter) of acid,
conjugate base, and salt for the recipe. It really sped up the design
of formulation experiments (especially constant ionic strength designs).

Unfortunately, the program was written for the Mac, and only ran on
older Mac OSs. My question to the list: does anyone know of a Windows
program (shareware or otherwise) that will serve the same functional
requirements?

Thanks.

Eric Scharin
Technical Services
Covance Biotechnology Services


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