Quest & Metrosonics® Noise Dosimeters Receive MSHA Intrinsic Safety Approval

First Dosimeters in World to Incorporate Exposure Alarms -- Enables Administrative Control When Engineering Controls Are Not Feasible

Oconomowoc, WI, April 27, 2004: Quest Technologies Inc, an employee-owned world leader in the development and manufacture of monitoring instrumentation and software for occupational and environmental health & safety (OEHS) applications, today announced that it's NoisePro™ Series and Metrosonics model db-4000EZ Noise Dosimeters have been independently tested and certified by the Mine Safety & Health Administration (MSHA) to meet the requirements of Title 30 Code of Federal Regulations, Part 18 and are approved as permissible for use in gassy underground mines. The NoisePro Series and db-4000EZ monitors are used to evaluate worker exposure to harmful noise levels. Prior to the introduction of these new monitors in October 2003, noise dosimeters were limited to measuring and reporting accumulated noise exposure levels. Within the mining industry, feasible engineering controls are often not available or cost prohibitive. By incorporating visual and tactile alarms into these new MSHA-Approved dosimeters, mine operators are afforded a whole new method for controlling noise exposures and hearing loss. Quest is the first and only company to manufacture MHSA-approved noise dosimeters capable of telling a miner when they need hearing protection and when they have reached their daily exposure limit. This capability allows mine operators to apply administrative controls in applications where engineering controls are impractical.

"We have enjoyed a long and successful relationship with the U.S. Mining industry, both at the enforcement level and with the mine operators. We are excited to be able to bring to them some innovative technology that is supportive of both MSHA's mission and the mine operator's needs," said Dan Webster, CEO & President of Quest Technologies.
The NoisePro Series and db-4000EZ dosimeters will be on display at numerous trade shows around the world. Consult the www.Quest-Technologies.com web site and click on "Events" for the latest listing. For more information, call 1-800-245-0779, 262-567-9157 or email sales@Quest-Technologies.com.
About Quest Technologies
Founded in 1946, Quest Technologies Incorporated is one of the most widely recognized and respected names worldwide for safety & industrial hygiene instrumentation and software. We are a multi-brand, employee-owned company marketing our products through select independent distributors in over 50 countries worldwide. Our expertise is instrumentation and software and supporting calibration, rental and educational seminar services associated with monitoring and evaluation of occupational and environmental health & safety hazards. Our customers use our products in applications that currently include noise, vibration, heat stress, thermal comfort, indoor air quality and toxic/combustible gases. Our Quest and Metrosonics brands are used extensively in military, mining, research, enforcement, insurance, consulting, educational, manufacturing, pharmaceutical, petrochemical, and sports medicine markets. The Metrosonics brand offers a broad array of "Simple Solutions At Affordable Prices", while our Quest brand offers "The System Solution" to all your monitoring and data analysis requirements. For more information about Quest and Metrosonics, please visit www.Quest-Technologies.com and www.Metrosonics.com.