Alpha Track Radon Detectors

[elizabeth_algutifan@wssrap-host.wssrap.com]

Does anyone know of any alpha track vendors other than Landauer and Terradex (or
is that a trade name?)?  If you can provide a name, can you also tell me if they
allow for the discrimination of radon and thoron gas using Pearson's method? 
Thanks.

Elizabeth Algutifan,
Health Physicist
Weldon Spring Site Remedial Action Project
St. Charles, MO
Elizabeth_Algutifan@wssrap-host.wssrap.com

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