The single-use Xcellerex XDR-10 is a flexible, stirred-tank bioreactor system suitable for use in process development, small-scale production, and process troubleshooting. XDR-10 delivers accurate and predictable results that minimize the number of required runs, to save time, work, and costs. The system has a design based on the same technology platform as the larger Xcellerex bioreactors, allowing smooth scale-up from bench-top to pilot and full production scale in large bioreactor systems. The XDR-10 bioreactor system handles working volumes from 4.5 to 10 L and is available in single-, twin-, triple-, and quad-vessel configurations. The possibility of a multi-vessel configuration facilitates the use of design of experiment (DoE) strategies in, for example, process development.