In existence for 42 years, the Duckbill Sampling System is unique among samplers. It has no pumps or scoops but uses compressed air to push the sample out at high velocities. Sample lifts of 80 feet are possible with long horizontal runs. The system is inherently explosion proof and the compressed air dries the sampling lines to prevent freezing. If you are looking for a simple and reliable sampler, look for a Duckbill.