ANAHEIM, CA - September 6, 2005 -- Omron STI Machine Services, a business unit of Omron Scientific Technologies, Inc. (Omron STI), (NASDAQ:STIZ), a leading North American provider of automation safeguarding technology, and Alcoa Safety and Health Services, a unit of Alcoa (NYSE:AA), have formally partnered to create a referral network for professional safety services to their clients. Where client needs reach beyond each vendors' area of expertise, this referral partnership promises to provide clients a direct link to safety professionals, thus saving time and frustration in sorting through the myriad of vendor options.

Omron STI Machine Services provides comprehensive machine safeguarding services for their clients, including risk assessments and risk reduction planning, review of safety system and circuit designs, project management, project engineering and documentation, machine safety seminars and training, and turn-key safety integration.

Alcoa Safety and Health Services assists clients with the creation and modification of corporate or plant wide safety and health programs. Their primary focus is on the overall safety and health strategy and the supporting management system, with an emphasis on reducing risk of serious injury or occupational illness.

Commenting on the partnership, Joseph J. Lazzara, President & CEO of STI stated, "This agreement highlights our joint ability to harness customer opportunities by enhancing the effectiveness of their safety and health programs and to do so as cost effectively as possible, from safety and health program development to machinery safeguarding."

Jeff Shockey, Director, Alcoa Safety and Health Services, added, "Alcoa Safety and Health Services is in a unique position to understand the issues our clients face because we have faced many of the same issues ourselves. Our depth and breadth of real world experience allows us to transfer our knowledge as well as our experience with specialty consultants, like Omron STI Machine Services, that can lead to rapid change and improvement in safety and health performance on a global scale."

About Alcoa Safety and Health Services
Alcoa Safety and Health Services, is a unit of Alcoa, Inc. the world's leading producer and manager of primary aluminum, fabricated aluminum, and alumina. Alcoa Safety and Health Services (ASHS), anchored by seasoned practitioners, is focused on providing real-world experience and knowledge to companies seeking rapid change and improvement in their safety and health performance. Many of the same professionals that have built Alcoa into a global safety and health leader with a proven track record of protecting employees are involved in ASHS.

For more information contact: Alcoa Safety and Health Services, 201 Isabella Street, Pittsburgh, PA 15212; 1-877-553-2001; www.alcoa.com.

About Omron STI Machine Services
Omron STI Machine Services provides all necessary machine safeguarding services, including risk assessment/risk reduction planning, documentation, review of safety system and circuit designs, complete safety system integration, and project management. Omron STI Machine Services has over 30 years of experience in industrial machine safeguarding. A division of Omron Scientific Technologies Inc. (Omron STI), Omron STI Machine Services is the leading resource for machine and process safeguarding services. Omron STI has been selected twice by Forbes and three times by Business Week as one of the "world's best small companies." Omron STI's safety products are used to protect workers around machinery, automated equipment and industrial robots. For more information contact: Omron STI Machine Services, 4545 East La Palma Ave, Anaheim, CA 92807; 1-866-260-4784; www.stimachineservices.com.