Cytiva ÄKTA pcc Chromatography System

Overview

The Cytiva ÄKTA pcc Chromatography System is an engineered platform for periodic counter-current chromatography (PCC), specifically developed to bridge the gap between laboratory-scale process development and clinical/commercial biomanufacturing. Unlike conventional batch chromatography, PCC enables continuous loading and elution across multiple columns in a synchronized cycle—maximizing resin binding capacity utilization, minimizing buffer consumption, and reducing column volume requirements by up to 50% compared to traditional single-column operations. The system operates on the principle of dynamic load redistribution: while one column undergoes elution and regeneration, others remain in binding or washing phases, ensuring uninterrupted product capture and consistent residence time control. This architecture delivers higher productivity (g/L·hr), improved yield consistency, and enhanced robustness for purification of sensitive biologics—including monoclonal antibodies (mAbs), Fc-fusion proteins, and viral vectors—where thermal or proteolytic instability demands minimal residence time and precise pH/ionic strength control.

Key Features

• Modular 3-column (3C) or 4-column (4C) configuration supporting flexible PCC cycle design and scalability validation
• Integrated high-precision peristaltic pumps, UV/VIS detectors (280 nm & 254 nm), conductivity and pH sensors with real-time feedback control
• UNICORN™ 7.x software suite enabling method development, sequence automation, audit trail logging, and electronic signature compliance per FDA 21 CFR Part 11
• Compact footprint (< 0.8 m²) optimized for cleanroom integration and multi-system deployment in limited lab space
• Resin-agnostic hardware interface compatible with common chromatographic media (e.g., Protein A, ion exchange, hydrophobic interaction resins)
• Automated column switching valves with low-dead-volume manifolds to minimize peak dispersion and ensure reproducible transfer kinetics

Sample Compatibility & Compliance

The ÄKTA pcc system accommodates clarified harvests from mammalian (CHO, HEK293), microbial (E. coli, yeast), and viral vector upstream processes. It supports feed streams with turbidity up to 10 NTU and particulate loads ≤ 5 µm without prefiltration under validated conditions. All wetted materials comply with USP Class VI biocompatibility standards; fluid paths are constructed from pharmaceutical-grade PEEK, stainless steel (316L), and fluoropolymer tubing. The system architecture aligns with ICH Q5A(R2) for purity assessment, ICH Q8(R2) for Quality by Design (QbD)-driven method development, and supports data integrity requirements under EU Annex 11 and PIC/S guidelines. Full traceability is maintained through timestamped event logs, parameter change history, and user-access-controlled method versioning.

Software & Data Management

UNICORN™ software provides end-to-end workflow management—from method creation and simulation to execution, reporting, and export. Built-in tools include peak integration with baseline correction algorithms, overlay comparison for column-to-column performance evaluation, and automated calculation of dynamic binding capacity (DBC), yield, and purity metrics. Raw data files (.u7d) are stored in a secure, encrypted local database with optional integration into enterprise LIMS or MES platforms via OPC UA or CSV export. Audit trails record all user actions—including login/logout events, parameter modifications, and manual overrides—with immutable timestamps and operator IDs. Validation packages (IQ/OQ/PQ) and electronic signature templates are available for GxP environments requiring GLP or cGMP compliance.

Applications

• Continuous capture of monoclonal antibodies using Protein A affinity chromatography
• Polishing steps involving mixed-mode or anion exchange resins for host cell protein (HCP) and DNA clearance
• Process intensification studies comparing PCC vs. batch chromatography for cost-of-goods modeling
• Scale-down modeling for BioProcess pcc systems using identical UNICORN methods and column geometries
• Purification of labile bispecifics and antibody-drug conjugates (ADCs) where extended exposure to low-pH elution buffers must be minimized
• Support for regulatory filings including comparability protocols for platform process transitions

FAQ

What is the maximum flow rate supported by the ÄKTA pcc system?

The system supports flow rates up to 10 mL/min per pump channel, configurable for parallel or sequential column operation depending on column internal diameter and resin pressure limits.
Can the ÄKTA pcc be used for non-protein biomolecules such as plasmid DNA or mRNA?

Yes—when paired with appropriate resins (e.g., anion exchange or multimodal ligands), it has been applied in early-stage purification workflows for nucleic acid therapeutics, subject to method qualification.
Is remote monitoring and support available?

Cytiva’s OptiRun™ service includes remote diagnostics, predictive maintenance alerts, and secure cloud-based data backup options upon contract activation.
How does the system handle method transfer to BioProcess pcc platforms?

UNICORN methods—including gradient profiles, valve sequences, and detection thresholds—are directly scalable using dimensionless parameters (e.g., residence time, bed volumes) and validated column geometry mappings.
Does the system meet FDA 21 CFR Part 11 requirements out-of-the-box?

Yes—UNICORN 7.x includes configurable electronic signatures, audit trail generation, and role-based access controls required for Part 11 compliance; full validation documentation is provided with the system.