Single-Use Airlift Bioreactor

What is the 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. It suits shear-sensitive cells, fragile cell types and multi-product manufacturing facilities.

Overview

A single-use airlift bioreactor brings gas-driven circulation to a disposable fluid path. A pre-sterilized bag or rigid liner with an internal draft tube or shaped channel creates riser and downcomer zones, and gas injected at the base drives circulation without an impeller. Because there are no moving parts in the culture and no shaft seal, shear is low and the fluid path stays closed, which suits fragile cells and reduces contamination risk. Temperature is controlled by the reusable support jacket or an external system, and single-use pH and dissolved oxygen sensors monitor the culture. Gas flow, enrichment and pressure set the circulation rate and oxygen supply. The design is less common than stirred single-use bags but is used where low shear and simple sterile setup are priorities.

How does it 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.

What are the key features?

• Disposable bag or liner with draft tube
• Gas-driven circulation with no impeller
• Low shear and closed fluid path
• Single-use pH and dissolved oxygen sensors
• Reusable support with temperature control

What are the technical specifications?

A typical single-use airlift bioreactor configuration offers working volume of 1–500 L, mixing principle of Airlift, gas driven, aeration rate of 0.5–2 vvm, bag material of Multi-layer film or rigid liner, temperature range of 10–45 °C and sterilization of Gamma irradiation 25–40 kGy. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Single-Use Airlift Bioreactor is used in shear-sensitive cell culture, cell therapy development, multi-product manufacturing and vaccine research. Across the wider Single-Use Bioreactors class, laboratories also deploy it for clinical and multi-product manufacturing, monoclonal antibody production and cell therapy manufacturing.

Which standards and certifications apply?

Relevant standards and methods include 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. Certification candidates for this model are CE, ISO 13485 manufacturing and ISO 11137 sterilization; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

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.

How do I select the right Single-Use Airlift Bioreactor?

Choose a single-use airlift when low shear and a simple closed fluid path are priorities. In an RFQ specify volume range, bag or liner design, aeration range, temperature control, sensor options and extractables and leachables documentation.

How does it compare with other Single-Use Bioreactors variants?

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.