Minimize Time to Patients

Straightforward Scalability and Rational Process Development

The Biostat® STR family is the ideal platform for your single-use production needs, from preclinical supply to commercial production. Classic stirred tank design ensures straightforward scale-up and provides superior mixing and oxygen transfer for high cell density cultures. Our holistic process safety concept based on our Flexsafe® bags, easy installation and pre-use bag testing makes single-use bioreactor operation reliable, safe and easy.

Robust and Easy-to-Use Production Platform

Single use Manufacturing has Never Been Easier

Forget about cell growth issues due to plastic material inconsistencies and toxic leachables derived from antioxidants. Flexsafe® STR bags ensure lot-to -lot consistent growth performance due to control of the resin and additive package, film extrusion and bag manufacturing. Rely on proven and scalable stirred tank design with the Biostat STR® for clinical and commercial manufacturing. First to market, Sartorius provides now also noninvasive and operator independent monitoring of viable biomass with BioPAT® Viamass to support advanced control strategies or just improving batch-to-batch consistency.

Enhance Productivity and Reduce Facility Footprint

Best Single-Use Bioreactor Solution for High-Cell Density, Intensified Cultures

Benefit from the excellent oxygen transfer, mixing and CO2 stripping of our Biostat® STR single-use bioreactors. Easily establish high cell density continuous fed-batch or classical perfusion processes and mitigate the risk of excessive foaming and exhaust filter blockage.

Reduce Risk of Batch Losses

Post-Installation, Pre-Use Leak Testing Takes Safety to the Highest Level

Our validated, automatic and fast method for non-destructive post installation bag testing verifies the intactness of the bag and the manual connections just before use. The pressure drop based technology helps you to detect manual errors or bag defects introduced during unpacking or any other operation after the bioreactor bag has left our facility to eliminate batch losses and keep your production timelines on track.

Learn More


Biopharm International

Single-Use Bioreactors for the Rapid Production of Preclinical and Clinical Biopharmaceuticals

Read Article

BioProcess International

Pressure Decay Method for Postinstallation Single-Use Bioreactor Bag Testing

Read Article

Continuous Processing at 2000L Single-Use Bioreactor Scale

Continuous culture provides high space time yields and a constant culture environment, positively affecting product quality. Especially, concentrated fed-batch mode enables single use commercial manufacturing of monoclonal antibodies at 2kL scale; previously only commercially viable in large stainless steel facilities. However, these high cell density cultures are very demanding regarding oxygen transfer and CO2 removal. The Biostat STR® has demonstrated superior performance even for the most challenging processes.

Your Biomanufacturing Solutions Partner

Rapid and cost-effective single-use / hybrid solutions from early phase development through scale-up to commercial manufacturing.

Learn More
Sartorius Single-Use Bioreactors and Single-Use Platform

Step 5: Seed Train

< Previous Step

Step 7: Harvesting

Next Step >

Contact Our Experts

Explore the Sartorius Platforms for Biomanufacturing

Vaccine Manufacturing, Process Development and Production

Learn More

Regenerative Medicine

Learn More


Learn More