Microflown Technologies offers a complete solution to measure the acoustic properties of materials with its In-situ absorption setup. This method is a true alternative for the well known Kundt's method or reverberant room method. Taking (destructive) samples is no longer required, and also the absorption of sound waves under oblique angles of incidence, as they occur in practice of course, can finally be tested. The system can even measure, next to material samples, complete assembled parts. Extremely high spatial resolution allows analysis of inhomogeneous, e.g. perforated, materials. As the in situ method also works with a relative movement between sample and probe, end of line control of materials has become possible. Curved materials can be measured, so the quality of the acoustic package as applied in the final assembly lines can be tested.