We've had good luck with Bondtronix (510) 947-2664
and Aptek (800) 363-4363. Both in N. Cal.

Stuart Wenzel, Ph.D.
Berkeley MicroInstruments, Inc.             Phone: (510) 231-5710
1305 South 46th St., Bldg. 164                Fax: (510) 231-5711
Richmond, CA  94804                         Pager: (510) 262-2258