WALTHAM, MA, December 6, 2007 — Photovac, Inc., the manufacturer of premium instruments for VOC analysis in air, soil, and groundwater, introduces a new gas measurement capability for the Voyager portable gas chromatograph to monitor specifically for Diacetyl.

Diacetyl, as one of the ingredients of food flavorings, such as buttered popcorn, may be responsible for the development of serious respiratory illnesses, including asthma and bronchiolitis, in employees exposed to it. With its gas chromatography-based technology incorporated in a portable instrument, the Photovac Voyager Portable Gas Chromatograph is ideally suited to perform accurate and reliable measurements of Diacetyl (also called butanedione or 2,3-butanedione, molecular formula C4H6O2). Results are provided on-site for immediate review, thereby eliminating time-consuming and costly laboratory analyses.

To read more about the OSHA Hazard Communication Guidance for Diacetyl on OSHA website at http://www.osha.gov/dsg/guidance/diacetyl-guidance.html .

About Photovac, Inc.

Photovac is the premier provider of hand-held instruments for superior detection, measurement, analysis, and monitoring of volatile organic compounds (VOCs) in air, soil, or groundwater. Every Photovac instrument is designed to be portable and rugged to perform flawlessly on site under the toughest field conditions. With over 25 years of experience in the technology of photoionization detectors, gas chromatographs, and flame ionization detectors, Photovac has provided hundreds of applications to meet VOC analysis requirements.

For more information and to view the complete line of instruments, please visit the website at www.photovac.com