Single-Use Benchtop Fermenter

What is the Single-Use Benchtop Fermenter?

A single-use benchtop fermenter uses a pre-sterilized bag or liner with integrated sensors, avoiding cleaning and autoclaving between experiments. It speeds up turnaround and reduces cross-contamination risk in multi-product development laboratories and clinical material preparation.

Overview

A single-use benchtop fermenter replaces the reusable vessel with a pre-sterilized polymer bag or liner that fits a reusable support and mixing system. The bag includes ports for gas inlet and exhaust, feeds, sampling and often single-use pH and dissolved oxygen sensor patches. Mixing may be provided by an impeller mounted on the bag, by a rocking platform or by wave-induced motion, and temperature is controlled through the support or an external jacket. Because the fluid path is sterilized by the supplier, no cleaning or autoclaving is required between runs, which shortens changeover and reduces cross-contamination risk. Volumes typically span 1 to 50 litres. The format suits process development with multiple products or strains, and extractables data and bag integrity checks are important because the polymer contacts the culture.

How does it work?

A laboratory fermenter provides a sterile, mixed and aerated liquid medium in which sensors measure and controllers regulate the conditions that determine growth and product formation. Agitation by a top- or bottom-driven impeller disperses oxygen and nutrients, and air or enriched oxygen is sparged through the liquid and vented through a condenser and exhaust filter. Temperature is held by a water jacket or heating blanket, pH is corrected by dosing acid or base, and dissolved oxygen is maintained by adjusting stirrer speed, gas flow or gas composition through cascade control. Foam is managed with antifoam or a mechanical breaker, and feed pumps add carbon source in fed-batch mode. Small working volumes allow many experiments with limited material, and glass or small stainless vessels let operators observe the culture and change configuration quickly.

What are the key features?

• Pre-sterilized single-use bag or liner
• Integrated single-use pH and dissolved oxygen sensors
• Rocking, wave or impeller mixing options
• No cleaning or autoclaving between runs
• Reusable support with temperature control

What are the technical specifications?

A typical single-use benchtop fermenter configuration offers working volume of 1–50 L, bag material of Multi-layer polyethylene film, sterilization of Gamma irradiation 25–40 kGy, mixing of Rocking, wave or impeller, temperature range of Ambient +5 to 50 °C and dissolved oxygen control of Single-use sensor, cascade control. 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 Benchtop Fermenter is used in multi-product process development, strain comparison studies, clinical material preparation and rapid turnaround screening. Across the wider Laboratory Fermenters class, laboratories also deploy it for strain screening and selection, media and feed optimization and process development and scale-up studies.

Which standards and certifications apply?

Relevant standards and methods include ISO 9001, EU GMP Annex 1, 21 CFR Part 11, USP <87>, USP <88>, IEC 61010-1 and ICH Q11. Certification candidates for this model are CE, ISO 9001 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.

Verify sterilization of the vessel, headplate and lines before inoculation, and confirm that filters and sampling ports are intact. Calibrate pH and dissolved oxygen probes before each run and check their response with standards. Record setpoints, deviations and offline measurements such as cell count and glucose, since these support interpretation and scale-up. Keep an aseptic technique for sampling to avoid contamination, and discard runs that show contamination rather than continuing. Clean probes and vessels promptly, avoid damaging electrode membranes and follow the manufacturer guidance for autoclaving. For process development records, keep batch logs that link conditions to outcomes and note any equipment changes.

How do I select the right Single-Use Benchtop Fermenter?

Choose a single-use benchtop fermenter when changeover speed and cross-contamination control matter more than consumable cost. In an RFQ specify volume, bag film and sensor options, mixing principle, temperature range, extractables data and integrity test method.

How does it compare with other Laboratory Fermenters variants?

Choose the vessel volume from the amount of material and the number of conditions you must test, keeping headspace of about 20 to 30 percent for foam and aeration. Decide between glass, which allows observation and quick reconfiguration, and small stainless steel, which tolerates higher pressure and repeated sterilization. List the control loops you need, the number of sensor and feed ports and whether cascade control, exhaust gas analysis or redox measurement matter. If you screen many conditions, a parallel multi-vessel system with independent control saves time and material. Choose a single-use format when cleaning between experiments would slow you down. Confirm that the control software records batch profiles and exports data, and that you can scale the geometry and control strategy to pilot and production vessels.