Lorna, try: IPL - Isotope Products Laboratories, Burbank, CA FON 818-843-7000 Ask for Ruth Amlauer-Devine or Keith Ho. Best Regards from Germany Udo ublaseg@csi.com ************************************************************************ The RADSAFE Frequently Asked Questions list, archives and subscription information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html