LiFlus GX Laboratory-Scale Bioreactor

Overview

The LiFlus GX is a modular, laboratory-scale bioreactor system engineered for precision-controlled microbial, yeast, and mammalian cell culture fermentation. It operates on classical fed-batch and batch fermentation principles, integrating real-time monitoring and closed-loop control of critical physiological parameters—including temperature, dissolved oxygen (DO), pH, agitation speed, and gas flow—within a single compact control architecture. Designed for reproducible scale-down studies and process development, the GX platform supports regulatory-compliant workflows through its PID-based control algorithms, traceable sensor calibration, and digital data logging capabilities. Its top-driven mechanical agitation system, coupled with a robust 316L stainless steel construction and 0.2 µm absolute filtration on both inlet and exhaust streams, ensures sterility integrity and operational reliability in GMP-adjacent research environments.

Key Features

• Top-mounted DC servo motor drive delivering precise agitation control across 50–1,200 rpm, with programmable speed limits and torque stability under varying broth viscosities
• Dual-mode DO control: primary regulation via agitation speed modulation; optional integration with gas blending modules (e.g., Air/O₂ mixing) for enhanced oxygen transfer efficiency
• Integrated four-channel peristaltic pump module—individually adjustable—for automated acid/base addition, antifoam dosing, and nutrient feeding, supporting both point-setpoint and segmented pH/feeding profiles
• High-fidelity sensing suite: PT100 temperature probe (±0.1 °C accuracy), industrial-grade Mettler Toledo or Hamilton pH and DO electrodes with automatic temperature compensation, and dual-gas mass flow control (TMM/TMC)
• Intuitive 7-inch LCD touchscreen interface with real-time graphical display of all process variables, trend logging, and alarm management
• Compact control cabinet (420 × 245 × 720 mm) housing all electronics, pumps, and I/O interfaces—designed for benchtop deployment with minimal footprint
• Flexible vessel configuration: choice of single-wall vessels with integrated heating plates or double-jacketed vessels compatible with external water bath or chiller units for precise thermal management

Sample Compatibility & Compliance

The LiFlus GX accommodates a broad range of biological systems—including Escherichia coli, Saccharomyces cerevisiae, Pichia pastoris, CHO cells, and filamentous fungi—across volumes from 1 L to 10 L working capacity (vessel-dependent). All wetted parts conform to ASTM A276 and EN 10088-1 standards for 316L stainless steel. Gas distribution employs a perforated annular sparger ensuring uniform bubble dispersion and minimized foam generation. Inlet and exhaust filtration meets ISO 8573-1 Class 2 purity requirements, validated for sterile air delivery. The system supports documentation practices aligned with GLP and early-phase GMP expectations, including timestamped parameter logging and RS-232C export for external audit trail storage.

Software & Data Management

Process data—including pH, DO, temperature, agitation speed, antifoam events, and pump actuation status—are continuously sampled and displayed in real time via an embedded graphical user interface. Historical data are stored internally and exportable via RS-232C serial communication to third-party SCADA or LIMS platforms. While the GX does not include proprietary cloud software, its ASCII-based output protocol enables seamless integration with MATLAB, Python-based analysis pipelines, or commercial data historians. Audit-ready records support FDA 21 CFR Part 11 compliance when paired with validated external software and electronic signature protocols.

Applications

• Strain screening and media optimization under controlled DO/pH setpoints
• Fermentation kinetic modeling and scale-up correlation studies
• Process analytical technology (PAT) implementation for critical quality attribute (CQA) monitoring
• Antibiotic, enzyme, recombinant protein, and organic acid production process development
• Teaching and training in biochemical engineering laboratories
• Bioprocess validation support for upstream unit operations prior to pilot-scale transfer

FAQ

What vessel configurations are supported by the LiFlus GX?
Standard options include single-wall glass or stainless steel vessels (1–5 L) with integrated heating plates, and double-jacketed stainless steel vessels (3–10 L) for external temperature control via circulating water baths or chillers.
Is the system compatible with regulatory documentation requirements?
Yes—the GX provides timestamped, uneditable digital logs of all controlled and measured parameters, and supports external archiving for GLP/GMP-aligned record retention when used with validated data acquisition systems.
Can the DO control mode operate independently of gas composition adjustment?
Yes. The default DO control strategy modulates agitation speed only; however, the system architecture permits optional integration of a 4-channel gas mixer for concurrent O₂ enrichment and flow-rate optimization.
Are calibration procedures traceable to international standards?
All sensors—including pH, DO, and temperature—are field-calibratable using NIST-traceable reference solutions and certified probes; calibration history is retained in the controller’s event log.
What electrical specifications does the control cabinet require?
The unit operates on 220 V AC, 50/60 Hz single-phase power with CE marking and conforms to IEC 61000-6-3 EMC emission standards.