YSI proudly offers Flownamics FISP^® in-situ Sampling Probes as part of our online monitoring systems. FISP sampling probes have been the standard in-situ bioreactor and vessel sampling device for over 20 years. Employing ceramic microfiltration technology, FISP sampling probes provide simple, cell-free sampling while ensuring bioreactor or fermentor sterility. FISP sampling probes are available in a variety of sizes to fit most types of bioreactors, including single-use vessels.