In Europe, you can now buy directly from USB Europe GmBH
Hauptstrasse 1; 79219 Staufen, Germany
Office:  +49(0)76 33 - 933 400
Email:  customerserv@usbweb.de

In Canada, please contact MJS BioLynx. 

In Australia and New Zealand, please contact Millennium Science.

USB products are distributed by GE Healthcare Bio-Sciences (formerly Amersham Biosciences) throughout the world.