RE: I-129 Sources

["Perrero, Daren" <Perrero@idns.state.il.us>]

I believe what you are referring to is commonly called "a mock iodine"
source.  The I-129 is configured in such a way that the emitted spectrum
mimics that of I-125 but has the obvious advantage of the extended half life
of I-129.  Most gamma counter equipment vendors would be happy to link you
up with direct vendors or may even be able to provide such sources
themselves.

Good Luck

The thoughts expressed are mine, mine, all mine!
I'm with the government, I'm here to help........
Daren Perrero, Health Physicist
perrero@idns.state.il.us


-----Original Message-----
From: Hohnadel, David ,PhD [mailto:hohnadel@acmlab.com]
Sent: Wednesday, January 10, 2001 2:40 PM
To: Multiple recipients of list
Subject: I-129 Sources


Hi RadSafers:

I'm a clinical biochemist and new lister.  
I'm in the process of setting up a Medical Laboratory facility that uses
tracer levels of I-125
for biological testing as part of commercial analytical "kits".  I have
applied to NYSDOH as part of this process 
for the license am awaiting their inspector.  In the past, I have always
been a user on a facility license. I seem 
to remember using an I-129 sealed source in a test-tube type container
as a secondary standard.  The company
I'm to obtain standard materials from currently only supplies I-125 as
standards.  Does anyone know if these 
types of materials are still available and where to obtain them?  Thanks
for your help.

David C. Hohnadel, Ph.D. (FACB)
Technical Director, ACM Medical Laboratories
Phone (716)429-2399     FAX (716)247-7735
hohnadel@acmlab.com

************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html