How do Single-Use Bioreactors work?
A single-use bioreactor replaces the product-contact fluid path with a pre-sterilized bag, tubing set, filters and connectors, while the hardware provides mixing, temperature control, sensors and pumps. The bag is irradiated by the supplier, so no cleaning or sterilization is needed before use, and it is discarded after the batch. Mixing is provided by a magnetically coupled impeller, a rocking platform or orbital shaking, depending on the design, and gas exchange occurs through a sparger or a gas-permeable film. Single-use pH and dissolved oxygen sensors are built into the bag or connected as patches and read by reusable transmitters. Because the fluid path is new each time, changeover is fast and cross-contamination between products is limited, but extractables and leachables, bag integrity, pressure and volume limits and supply continuity must all be managed.
Which Single-Use Bioreactors variants are available?
- Stirred Single-Use Bioreactor — A stirred single-use bioreactor mixes the culture with an impeller mounted in or coupled to a disposable bag, giving higher oxygen transfer than rocking designs.
- Rocking Single-Use Bioreactor — A rocking single-use bioreactor mixes and aerates a bag by tilting it on a platform, creating a wave of liquid across the surface.
- Orbital-Shaken Single-Use Bioreactor — An orbital-shaken single-use bioreactor mixes cultures in a bag or tube on a shaking platform, giving good oxygen transfer at small volumes.
- Single-Use Airlift Bioreactor — A single-use airlift bioreactor circulates the culture with gas in a disposable bag or liner with no impeller, giving low-shear mixing.
- Single-Use Perfusion Bioreactor — A single-use perfusion bioreactor combines a disposable cultivation bag with a cell-retention device for continuous feeding and harvest.
How do I choose the right variant?
Choose the mixing principle from the culture and scale: stirred bags give higher oxygen transfer for demanding cells, rocking and orbital designs are gentler for shear-sensitive cultures and smaller volumes, and airlift and perfusion formats add specific capabilities. Confirm the working volume range and the bag sizes available, and check that the oxygen transfer rate meets the peak demand of your process. Verify which sensors are single-use and how they are calibrated, and check that the bag geometry matches your mixing and sampling needs. Review extractables and leachables data, bag integrity test methods, pressure ratings and storage and shelf life. Decide whether a reusable or disposable sensor path suits your facility, and confirm that the packaging, aseptic connectors and supply agreements fit your clinical or commercial timeline.
Where are Single-Use Bioreactors used?
Single-Use Bioreactors are specified in clinical and multi-product manufacturing, monoclonal antibody production, cell therapy manufacturing, vaccine and viral vector production and process development and scale-up.
Which standards and certifications apply?
Work with Single-Use Bioreactors is commonly governed by EU GMP Annex 1, EU GMP Annex 11, 21 CFR Part 11, ISO 11137, USP <661>, USP <665>, BPOG extractables guidance, ISO 13485 and IEC 61010-1. Instrument certifications such as CE marking are confirmed per configuration and never assumed.
What are the key considerations before purchase?
Inspect bags and tubing on receipt and before fitting, and perform the specified integrity check. Follow the supplier instructions for installation, inflation and leak testing, and avoid sharp edges that could puncture the film. Verify single-use sensor performance against offline measurements, because calibration may drift during long runs. Manage lot changes and supplier updates through change control, since these can affect performance. Handle the bag assembly with clean gloves and aseptic technique at connections, and store bags within the specified temperature and humidity range. Record bag lot numbers with each batch, and dispose of used bags according to local biohazard regulations.
