Isokinetic Method 5 Source Sampler Consoles are manufactured to conform with the construction design criteria and specifications cited in US EPA Method 5, Code of Federal Regulations (40CFR Part 60) and APTD-0581 Document. Our source sampler consoles allow operators to monitor gas velocities, temperatures, pressures and sample flow rates for maintaining isokinetic sampling conditions. With proper sampling, the sample gas enters the nozzle at velocity equal to approaching gas velocity. All Apex Instruments Models are interchangeable and compatible with most others currently in use. All consoles come standard with the Lubricated Rotary Vane Pump.