Teledyne Advanced Pollution Instrumentation is a leading producer of air quality monitoring instrumentation that complies with the EPA requirements for measuring ambient air quality. TAPI products are internationally known and include some of the largest and most critical air quality networks in the world. TAPI products are also designed for the CEM, process, semiconductor, and safety markets. TAPI instruments meet the demands of EPA Equivalency, dilution and extractive CEM, medical, food and beverage, and gas purification applications.