Cytiva AKTA avant Automated Protein Purification System
| Brand | Cytiva |
|---|---|
| Origin | USA |
| Model | AKTA avant |
| Flow Rate Options | 25 mL/min (AKTA avant 25) or 150 mL/min (AKTA avant 150) |
| Pressure Rating | Up to 20 MPa (200 bar) |
| Software | UNICORN 7.x or later |
| Column Tracking | RFID-enabled column recognition |
| Fraction Collector | Integrated Peltier-cooled (4–15 °C) |
| Buffer Preparation | BufferPro™ automated in-line mixing |
| Compliance | Supports 21 CFR Part 11-compliant configurations with audit trail, electronic signatures, and user access control |
Overview
The Cytiva AKTA avant is an automated preparative liquid chromatography system engineered for robust, scalable protein purification across research, process development, and early-stage GMP environments. Built upon the proven AKTA platform architecture, it employs high-pressure gradient pumping, precise UV/ conductivity/pH detection, and intelligent fraction collection to deliver reproducible separations of recombinant proteins, monoclonal antibodies, viral vectors, and other biologics. Its core operational principle relies on controlled mobile-phase delivery through packed chromatographic columns—enabling separation based on physicochemical properties such as size (SEC), charge (IEX), hydrophobicity (HIC), or affinity (e.g., Protein A). Designed for method scouting, parameter optimization, and linear scale-up, the AKTA avant integrates hardware modularity with software-driven experimental design to reduce empirical trial-and-error in purification workflow development.
Key Features
- Two configurable flow rate variants: AKTA avant 25 (max 25 mL/min, ideal for analytical-to-preparative screening) and AKTA avant 150 (max 150 mL/min, suitable for process-scale optimization and gram-level purification)
- High-pressure capability up to 20 MPa (200 bar), compatible with rigid media including POROS™, Capto™, and SOURCE™ resins
- UNICORN software v7.x or higher with integrated Design of Experiments (DoE) module—enabling multivariate parameter optimization (e.g., gradient slope, flow rate, pH, conductivity) with minimal experimental runs
- RFID-based column tracking: automatically logs column identity, usage history, regeneration cycles, and pressure profiles—supporting traceability requirements under GLP and GMP frameworks
- Peltier-cooled fraction collector maintaining 4–15 °C during collection, preserving thermolabile proteins and enzymatic activity
- BufferPro™ technology for real-time, in-line buffer blending using stock solutions—eliminating manual dilution, reducing human error, and improving batch-to-batch consistency
- Visual method editor with drag-and-drop logic; supports seamless method transfer between AKTA avant 25 and 150 systems via built-in scalability rules
Sample Compatibility & Compliance
The AKTA avant accommodates a broad range of sample types—including clarified lysates, cell culture supernatants, plasma fractions, and purified intermediates—with injection volumes from 10 µL to 100 mL depending on column geometry and application. It supports standard chromatographic modes: affinity (Protein A/G/L, His-tag, GST), ion exchange (anion/cation), size exclusion, hydrophobic interaction, and multimodal resins. System validation documentation—including IQ/OQ protocols, material certifications (USP Class VI elastomers), and compliance-ready configuration options—is available per Cytiva’s regulatory support package. When deployed with UNICORN’s 21 CFR Part 11-compliant mode (including role-based access control, electronic signatures, and immutable audit trails), the system meets data integrity requirements for FDA-submitted process development reports and non-clinical bioprocessing studies.
Software & Data Management
UNICORN software serves as the central control and data management interface. It provides real-time chromatogram visualization, peak integration with customizable baseline algorithms, and export of raw data in vendor-neutral formats (e.g., ASCII, CSV, .chm). All method parameters, instrument logs, and run metadata are stored in a structured database with timestamped entries. Audit trail functionality records operator actions, parameter changes, and system events—retained for ≥30 days by default and configurable for longer retention per internal SOPs. Data backup and restore workflows integrate with network file systems or NAS devices, ensuring continuity during instrument maintenance or software upgrades.
Applications
- Early-stage purification strategy development for novel biologics and biosimilars
- Resin screening and binding/elution condition optimization under DoE guidance
- Process characterization studies supporting Quality by Design (QbD) initiatives
- Preparative isolation of functional domains, fusion proteins, or post-translationally modified isoforms
- Downstream processing of viral vectors (AAV, lentivirus) and plasmid DNA
- Method transfer from benchtop to pilot-scale systems via linear velocity and residence time mapping
FAQ
What is the maximum operating pressure of the AKTA avant system?
The system is rated for continuous operation up to 20 MPa (200 bar), enabling use with high-resolution, low-pore-size media.
Can UNICORN software be validated for regulated environments?
Yes—UNICORN 7.2 and later versions include 21 CFR Part 11-compliant features when configured with appropriate IT infrastructure and administrative controls.
Is column tracking mandatory, or can it be disabled?
Column tracking is optional but strongly recommended; RFID readers are embedded in all AKTA avant models and may be bypassed only in non-GxP research settings.
Does the AKTA avant support multi-step purification methods?
Yes—UNICORN enables sequential method chaining, conditional triggers (e.g., UV threshold-based collection), and inter-method parameter inheritance.
How does BufferPro improve buffer preparation accuracy?
BufferPro uses gravimetric or volumetric feedback control to dynamically adjust stock solution ratios, achieving ±1% conductivity accuracy and eliminating manual titration variability.
