The Woodlands, TX – June 30, 2008. Rigaku Americas Corporation (RAC) today announced that Mr. Wes Hardenburg, the company’s Chief Financial Officer since 2000, has succeeded Dr. Paul Swepston as President and Chief Executive Officer. Dr. Swepston, who joined the company in 1996, will continue in a strategic capacity within the company and serve as Senior Advisor to the CEO of Rigaku Corporation (Tokyo, Japan). Mr. Hardenburg joined the company through the acquisition of Osmic, Inc. in 1999.

Mr. Hikaru Shimura, RAC Chairman, said of Dr. Swepston, “Paul has been an exceptional CEO whose courage and leadership has transformed the company from its beginning, when he first joined as President of Molecular Structure Corporation (MSC), into the thriving global business that RAC has become today.” He continued, “Paul will continue to prosper and contribute to the global organization of Rigaku and his new responsibilities will continue to shape our future.” Mr. Hardenburg elaborated that “Paul has been a very effective CEO who has greatly impacted the company through his passion and leadership. RAC is a great company with a strong history and an exciting future. I am much honored to have been chosen as its next CEO.”

About Rigaku

Since its inception in Japan in 1951, Rigaku has been at the forefront of analytical and industrial instrumentation technology. Rigaku and its subsidiaries form a global group focused on life sciences and general purpose analytical instrumentation. With hundreds of major innovations to its credit, Rigaku and its subsidiary companies are world leaders in the fields of small molecule and protein crystallography, X-ray spectrometry and diffraction, X-ray optics, as well as semiconductor metrology. Rigaku employs over 1,100 people. Its products are in use in more than 70 countries – supporting research, development, and quality assurance activities. Throughout the world, Rigaku continuously promotes partnerships, dialog, and innovation within the global scientific and industrial community.