Keithley's Metrology Services Earns Rigorous ISO 17025 Accreditation

Keithley’s Metrology Services Earn Rigorous ISO 17025 Accreditation

Cleveland, Ohio – September 2006 - Keithley Instruments, Inc. (NYSE:KEI), a leader in solutions for emerging measurement needs, announces that its Metrology Services Group is now accredited to ISO/IEC 17025:2005, the single most important metrology standard for test and measurement, by the A2LA (American Association for Laboratory Accreditation). This latest accreditation expands the list of Keithley certifications by industry-recognized standards for quality such as ISO 14001 and ISO 9001. The accreditation recognizes that Keithley's Metrology Services meet the requirements of this international standard, demonstrating its technical competence to carry out very high-level calibrations that are essential for many of Keithley's instruments, which have measurement resolutions below 1fA or 10-15. The scope of accreditation can be viewed at http://www.a2la.org/scopepdf/2462-01.pdf.

Keithley's customers can expect ISO 17025 accredited calibrations for Series 2300 sources, Series 2600 and Series 2400 SourceMeter® instruments, Integra Series products, Series 2000 DMMs, and the Model 6517A Electrometer. This list of models is expected to be expanded in the near future. Customers can be assured that their instruments are being calibrated to the highest industry standards and will provide consistent, quality measurements. Routine calibrations help avoid down time and prevent costly quality problems.

Helga Alexander, Keithley's Metrology Services Manager, explains how important the new accreditation level is to Keithley customers. "ISO 17025 accreditation proves to our customers that our calibrations are traceable to the international system of units (SI) through NIST (National Institute of Standards and Technology) and are performed with the highest level of technical competence," says Alexander. "Our accredited calibration reports provide information such as measurement uncertainties for each data point, enabling customers to thoroughly assess the condition of their instruments and providing them an even greater measure of confidence," she added. 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: www.keithley.com.

About Keithley Instruments
With 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). Its products solve emerging measurement needs in production testing, process monitoring, product development, and research. The company's customers are scientists and engineers in the worldwide electronics industry involved with advanced materials research, semiconductor device and wafer characterization and functional test, and the production of end products such as electronic assemblies or portable wireless devices. The value Keithley provides its customers is a combination of precision measurement technology and a rich understanding of their applications to improve the quality, throughput, and yield of their products. For more information please visit www.keithley.com.