Keithley's German Service Center Joins List of ISO 17025 Accredited Laboratories

Cleveland, Ohio – October 1, 2007 - Keithley Instruments, Inc. (NYSE:KEI), a leader in solutions for emerging measurement needs, announced today that the American Association for Laboratory Accreditation (A2LA) has accredited Keithley's German service center to ISO/IEC 17025:2005, the single most important metrology standard for test and measurement products. At the same time, the Metrology Services Department at Keithley's Cleveland headquarters, which received A2LA ISO/IEC 17025:2005 accreditation a year ago, dramatically expanded its capabilities to add even more Keithley products to its list of accredited calibration offerings. This accreditation assures customers that their instruments are being calibrated to the highest industry standards, so they can continue to deliver consistent, quality measurements. Routine calibrations help prevent unplanned downtime and costly quality problems. For more information on Keithley's Metrology Services, visit http://www.keithley.com/pr/057.

The A2LA accreditation recognizes that both the Cleveland Metrology Services Department and the German service center meet the requirements of this international standard, demonstrating their technical competence to carry out the very high-level calibrations essential for many of Keithley's instruments, some of which have measurement resolution as fine as one femtoamp (10-15A). The German center's scope of accreditation is available at http://www.a2la.org/scopepdf/2611-01.pdf; the expanded scope of Keithley's Cleveland Metrology Services Department is available for review at http://www.a2la.org/scopepdf/2462-01.pdf.

Customers can receive ISO 17025 accredited calibrations from Keithley's German service center for Series 2300 fast transient response power supplies, Series 2600 System SourceMeter® instruments, Series 2400 SourceMeter® instruments, Integra integrated switching/measurement/datalogging systems, Series 2000 digital multimeters, and the Model 2182A Nanovoltmeter. Keithley's metrology services in Cleveland have added the company's more sensitive product lines to its calibration capabilities, offering accredited measurements up to one tera-ohm and as low as 500 femtoamps, with very low measurement uncertainties. The list of Keithley models included in the calibration offering will continue to expand.

Emphasizing the importance of expanding Keithley's 17025 accreditation to service centers outside the United States, Tom Mego, Keithley's director of quality and continuous improvement, commented, "After our initial accreditation efforts here in the United States proved successful, it became apparent that, to provide the highest level of customer support around the world, we need to be able to offer accredited calibrations at other Keithley facilities. Our customers in Europe and other parts of the world can be assured that our calibrations are traceable to the international system of units (SI) and are performed with the highest level of technical competence."

For More Information. For more information on Keithley's Metrology Services or any of its test solutions, go to http://www.keithley.com/pr/057, or contact the company at:
Telephone: 800-688-9951
440-248-0400
FAX: 440-248-6168
E-mail: publisher@keithley.com
Internet: www.keithley.com
Address: Keithley Instruments, Inc.
28775 Aurora Road
Cleveland, OH 44139-1891

About Keithley Instruments, Inc.

With more than 60 years of measurement expertise, Keithley Instruments has become a world leader in advanced electrical test instruments and systems from DC to RF (radio frequency). Our products solve emerging measurement needs in production testing, process monitoring, product development, and research. Our customers are scientists and engineers in the worldwide electronics industry involved with advanced materials research, semiconductor device development and fabrication, and the production of end products such as portable wireless devices. The value we provide them is a combination of precision measurement technology and a rich understanding of their applications to improve the quality of their products and reduce their cost of test.

Products and company names listed are trademarks or trade names of their respective companies.

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