Cytiva Agile Flux Automated Ultrafiltration System

Overview

The Cytiva Agile Flux Automated Ultrafiltration System is an integrated, programmable platform engineered for scalable tangential flow filtration (TFF) operations in biopharmaceutical process development and manufacturing. Built upon a robust fluidic architecture and validated control logic, the system executes ultrafiltration (UF) and diafiltration (DF) processes using either flat-sheet cassette membranes or hollow-fiber modules—enabling consistent performance across development, clinical, and commercial-stage workflows. Its core measurement and control methodology relies on real-time transmembrane pressure (TMP), retentate and permeate flow monitoring, and automated feedback-driven pump speed modulation to maintain target flux and minimize membrane fouling. The system operates within defined process envelopes aligned with ICH Q5A, Q5B, and ISO 20387 principles for bioprocess consistency and product quality assurance.

Key Features

• Scalable membrane compatibility: Supports cassette modules from 0.1 to 2.5 m² and hollow-fiber cartridges of multiple diameters and lengths—ensuring seamless transition from benchtop optimization to pilot-scale validation.
• Pre-validated process templates: Five embedded, editable SOP-based programs—UF/DF production, normalized water permeability (NWP) testing, clean-in-place (CIP), water rinse, and alkaline hold—each with configurable parameters (e.g., TMP setpoint, hold time, flow ramp rates) and built-in safety interlocks.
• GMP-ready software stack: Compliant with FDA 21 CFR Part 11 and EU Annex 11 requirements; includes role-based user authentication, full electronic audit trail, timestamped event logging, and electronic signature support for critical actions.
• Modular hardware design: Optional add-ons include integrated pH/conductivity sensors, temperature-controlled feed tanks, automated buffer switching manifolds, and peristaltic or diaphragm pump variants for shear-sensitive applications.
• Process reproducibility: Closed-system architecture with calibrated flow meters, pressure transducers (±0.5% FS accuracy), and PID-controlled peristaltic pumps ensures batch-to-batch consistency under varying viscosity and particulate load conditions.

Sample Compatibility & Compliance

The Agile Flux system is validated for processing a broad spectrum of biologics—including monoclonal antibodies (mAbs), recombinant proteins, plasmid DNA, viral vectors (AAV, lentivirus), mRNA-LNPs, vaccines, and plasma-derived therapeutics. All wetted materials meet USP Class VI and FDA-compliant extractables/leachables profiles. System qualification documentation (DQ/IQ/OQ) is provided per client request and aligns with ASTM E2500-13 and ISPE Baseline Guide Vol. 4 (Biotechnology). Manufacturing adheres to Cytiva’s global quality management system certified to ISO 9001 and ISO 13485, with traceability maintained through component-level serial numbering and firmware version control.

Software & Data Management

The embedded control interface runs on a deterministic real-time OS with dual redundant storage for process data. All operational events—including parameter changes, alarm triggers, manual interventions, and program starts/stops—are recorded with immutable timestamps and operator IDs. Data export is supported in CSV and PDF formats; optional integration with LIMS or MES via OPC UA or Modbus TCP enables centralized batch record compilation. Electronic signatures comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and are enforced during critical steps such as recipe activation and final batch sign-off.

Applications

• Downstream purification: Concentration and buffer exchange of clarified harvest streams prior to chromatography.
• Viral vector processing: Harvest clarification, concentration, and formulation buffer exchange for AAV and lentiviral vectors under low-shear conditions.
• mRNA-LNP finishing: Final concentration, diafiltration into storage buffers, and sterile filtration integration.
• Plasmid purification: Tangential flow concentration following anion-exchange chromatography and endotoxin reduction steps.
• Process characterization studies: NWP trending, fouling resistance analysis, and scalability modeling across membrane formats.
• GMP manufacturing support: Small-batch production (up to 200 L feed volume) compliant with Annex 1 and WHO TRS 986 expectations for aseptic processing environments.

FAQ

Can the Agile Flux system be qualified for use in regulated GMP manufacturing?
Yes—the system is designed to support DQ/IQ/OQ/PQ execution and includes documentation packages aligned with FDA and EMA expectations for computerized system validation.
Is remote monitoring or cloud-based data backup available?
Local network connectivity is standard; secure cloud integration requires optional cybersecurity-hardened gateway hardware and client-approved IT infrastructure protocols.
Does the system support single-use or reusable flow paths?
Both configurations are supported: disposable tubing sets with gamma-sterilized connectors and reusable stainless-steel manifolds with CIP/SIP compatibility.
What level of technical support does Cytiva provide post-installation?
Cytiva offers comprehensive lifecycle support including on-site commissioning, operator training, preventive maintenance contracts, and 24/7 escalation engineering assistance for critical process deviations.
How is process scalability ensured between Agile Flux units?
Cytiva provides scale-up correlation tools based on constant shear rate and constant TMP modeling, validated against industry-standard dimensionless numbers (e.g., Reynolds, Graetz) to ensure geometric and dynamic similarity across membrane areas.