GE Xcellerex CDR-50 Single Use Bioreactor, technology and stirred‑tank design in a modular, turnkey, bioreactor platform. Designed for scalability and robustness, the XDR bioreactor systems provide the performance and flexibility needed from process development to large‑scale biopharmaceutical manufacturing. XDR bioreactor systems can be operated in batch, fed‑batch, and perfusion modes.