The Clean Air Express Method 5 Isokinetic Control Console is designed to allow monitoring and control of temperatures, pressures, gas velocities and sample flow rates to maintain Isokinetic sampling conditions. Top quality components and field proven durability make this the most dependable control console you can buy. Compatible with most systems currently in use. Suitable for EPA methods: 4, 5, 5I, 6, 8, 8A, 13, 17, 23, 26, 29, and many more (with proper accessories). For more information on this method, please visit the EPA’s CFR 40 website.