Application note
Demonstrating robust scale-up, packing consistency, and real-world bioprocess performance using the Evolve®D pre-packed column platform
This application note demonstrates the scalable packing and operational performance of MiMode PuraBead® CX2 within the Evolve®D pre-packed chromatography platform across a range of process-scale formats. The study highlights consistent packed-bed efficiency, reliable hydrodynamic performance, and low operational backpressure during scale-up, while additionally demonstrating compatibility with commercially available third-party agarose-based affinity resins. Real-world process applicability was further evaluated using EtoxiClear® endotoxin removal workflows across development and manufacturing-scale columns. The data demonstrates the capability of the Evolve®D platform to support flexible, scalable, and manufacturing-ready chromatography processes across diverse downstream purification applications.
Introduction
As downstream bioprocessing operations continue to increase in complexity and throughput, chromatography hardware and packing methodologies must deliver reproducibility, scalability, and dependable operational performance across a wide range of resin chemistries and process conditions.
Single-use, pre-packed chromatography columns are increasingly being adopted to reduce process downtime, eliminate cleaning validation requirements, and improve manufacturing flexibility. However, maintaining consistent packed-bed performance across multiple resin platforms remains a significant challenge, particularly when scaling processes.
The Evolve®D chromatography platform from Astrea Bioseparations has been developed to address these challenges through a scalable, process-ready, pre-packed column solution capable of supporting a broad range of chromatography media, including highly cross-linked agarose, mixed-mode, affinity, and specialty purification resins. In addition to its standard platform offering, we also provide custom column packing services using third-party resins, supporting customers from early-stage process development through to manufacturing-scale implementation.
This application note demonstrates the scalable packing and operational performance of MiMode PuraBead® CX2 within the Evolve®D platform, alongside representative examples of additional agarose-based chromatography matrices. The study highlights the capability of the Evolve®D platform to maintain consistent hydrodynamic performance, reproducible packing efficiency, and low operational backpressure across multiple process-scale formats.
In addition to packing studies, this work includes real-world process performance data using Astrea Bioseparations’ EtoxiClear® endotoxin removal technology to demonstrate practical implementation under customer-relevant manufacturing conditions.
Collectively, the data demonstrates the ability of the Evolve®D platform to support scalable, manufacturing-ready chromatography workflows across diverse downstream purification applications.
Evolve®D chromatography platform overview
Evolve®D columns are advanced single-use chromatography systems developed to support the evolving demands of modern biopharmaceutical purification processes. Available process formats include column diameters ranging from 7 cm up to 60 cm, with a broad and flexible range of bed heights to support both development-scale and manufacturing-scale applications (Figure 1). The platform is designed to enable seamless scalability while maintaining consistent packed-bed hydrodynamic performance and robust operational reliability.
The platform combines scalable packed-bed performance with a fully non-metallic flow path architecture (Figure 2), reducing the risks associated with corrosion, contamination, and biomolecule inactivation. By eliminating the need for column cleaning and validation, Evolve®D columns streamline manufacturing operations, reduce process downtime, and improve overall operational efficiency.
Figure 1: Evolve®D process formats include column diameters ranging from 7 cm up to 60 cm, with a broad and flexible range of bed heights to support both development-scale and manufacturing-scale applications.
Column installation and preparation
Installation of the Evolve®D platform has been designed to be simple, efficient, and manufacturing-ready, supporting rapid deployment into downstream processing operations. Columns are removed from protective packaging and positioned on a level surface before sanitary caps are removed and the system is connected to a primed chromatography skid using 25 mm tri-clamp fittings.
Following installation, the column is flushed using equilibration buffer at approximately 50% of the intended operating flow rate until pH and conductivity stabilize. Optional conditioning steps may then be performed using reverse-flow and down-flow equilibration cycles prior to process operation.
The streamlined installation workflow minimizes preparation time, reduces operator intervention, and supports efficient implementation within GMP manufacturing environments while preserving process consistency and operational reliability.
MiMode PuraBead® CX2
MiMode PuraBead® CX2 is a mixed-mode chromatography adsorbent featuring a proprietary synthetic ligand chemistry that combines cation exchange, hydrophobic, and hydrogenbonding interactions within a single purification platform.
The resin has been designed to support both bind-and-elute purification workflows and flow-through polishing applications for complex biomolecules, enabling enhanced selectivity and process flexibility across a wide range of downstream purification challenges.
MiMode PuraBead® CX2 is built on Astrea Bioseparations’ PuraBead® 6HF highly cross-linked agarose matrix, providing excellent mechanical stability, reliable packing performance, and high operational flow capability. The highly cross-linked agarose architecture supports scalable implementation within process chromatography platforms while supporting consistent packed-bed efficiency and low operational backpressure.
Parameter Specification
Matrix
PuraBead® 6HF (6% agarose base matrix)
Mean particle size 90 ± 10 µm
Static binding capacity 46 mg lysozyme/mL resin
Recommended packing solution 0.1 M NaCl
Recommended packing pressure Up to 1.2 bar
Operational flow capability Up to 600 cm/h
Operating pH pH 3–14
CIP compatibility 0.5–1.0 M NaOH
Storage solution 20% ethanol : 80% 0.1 M NaCl
Table 1: MiMode PuraBead® CX2 key resin characteristics.
Figure 2: Internal architecture of the Evolve®D chromatography platform designed for scalable, single-use bioprocess chromatography applications.
The robust agarose base matrix allows the resin to maintain excellent bed stability and hydrodynamic performance during scale-up into process-ready Evolve®D formats.
Materials and methods
1. Packing methodology
MiMode PuraBead® CX2 was packed into Evolve®D columns using Astrea Bioseparations’ standard compression packing methodology in an ISO 7 cleanroom suite. The resin was packed using 0.1 M NaCl as the packing solution with a compression factor of 1.2. Slurry concentration was determined using settled bed height analysis within small-scale C10 columns prior to scale-up, with the slurry typically prepared at approximately 50% settled concentration.
The packing methodology was designed to maximize packed-bed stability, hydrodynamic efficiency, scalability, and operational robustness while keeping low operational backpressure across all evaluated process formats.
2. Column performance testing
Following packing, columns underwent standard chromatographic efficiency testing using pulse injection methodology.
The study demonstrated successful packing and scale-up of MiMode PuraBead® CX2 within the Evolve®D platform while maintaining strong packed-bed performance characteristics. The highly cross-linked agarose base matrix demonstrated excellent consolidation behavior during compression packing and maintained low operational pressure across all evaluated process-scale formats.
Representative column efficiency chromatograms demonstrated consistent packed-bed performance across increasing process scale, with symmetrical peak profiles and minimal band broadening observed throughout the evaluated Evolve®D formats. The results confirmed stable
Plate count ≥1800–3000
Operational pressure ≤4 bar
2: Column packing acceptance criteria.
bed consolidation behavior and reproducible hydrodynamic performance following scale-up of MiMode PuraBead® CX2 within the platform.
The scale-up data demonstrated excellent reproducibility across all evaluated formats, with consistent packed-bed efficiency and minimal performance drift observed throughout increasing process scale. Across all columns tested, the platform maintained strong hydrodynamic performance alongside favorable low pressure-flow characteristics.
Importantly, all evaluated columns exceeded the predefined packed-bed acceptance criteria, demonstrating the capability of the Evolve®D platform to support scalable implementation of MiMode PuraBead® CX2 while delivering consistent operational and chromatographic performance.
Scalability across additional agarosebased matrix platforms
Astrea Bioseparations has extensive experience in packing more than 45 commercially available third-party chromatography resins across a broad range of purification applications and process scales. To further demonstrate the flexibility of the Evolve®D platform, additional agarose-based chromatography media, including MabSelect PrismA™ and MabCaptureC™, were evaluated within process-scale Evolve®D column formats.
These studies collectively demonstrated the capability of Evolve®D columns to support diverse purification chemistries
while maintaining reproducible packed-bed performance and scalable operational robustness.
Across all evaluated agarose matrices, the Evolve®D platform consistently demonstrated excellent packing reproducibility, dependable bed consolidation behavior, stable asymmetry performance, high plate count efficiency, and favorable low pressure-flow characteristics. Importantly, performance remained consistent throughout increasing process scale, demonstrating seamless scalability from process development through to manufacturing-scale implementation.
To evaluate the flexibility of the Evolve®D platform across commercially available affinity media, representative studies were performed using MabSelect PrismA™ and MabCaptureC™ agarose-based resins following the manufacturers’ recommended packing guidelines. The objective of these studies was to assess the ability of the platform to maintain consistent packing performance, hydrodynamic efficiency, and operational stability during scale-up into larger process-ready formats.
The MabSelect PrismA™ scale-up study demonstrated excellent reproducibility and packed-bed consistency across all evaluated Evolve®D formats. As process scale increased, the platform maintained stable asymmetry performance alongside low HETP values and favorable operational pressure characteristics.
Larger process-scale columns demonstrated consistently high packed-bed efficiency, with theoretical plate counts exceeding customer-defined acceptance criteria across all evaluated formats. The results demonstrated that the Evolve®D platform was capable of supporting scalable implementation of commercially available Protein A affinity media while achieving consistent chromatographic performance and robust hydrodynamic behavior throughout scale-up.
The MabCaptureC™ evaluation further demonstrated the ability of the Evolve®D platform to maintain reproducible packed-bed performance at larger process scales using agarose-based affinity media. Across all evaluated formats, the columns maintained stable asymmetry values, low HETP measurements, and strong plate count performance while operating at low backpressure.
The results additionally highlighted the robustness of the Evolve®D packing methodology when applied to commercially available third-party resins, supporting reliable scale-up without significant changes in chromatographic performance or hydrodynamic behavior.
Real-world performance data: EtoxiClear® endotoxin removal
To demonstrate real-world process applicability, Astrea Bioseparations evaluated EtoxiClear® endotoxin removal performance across multiple Evolve®R process development columns and Evolve®D manufacturing-scale column formats.
EtoxiClear® is an adsorbent developed specifically for the removal of bacterial endotoxin from biopharmaceutical
process streams that represent a significant challenge during the purification of biological products due to their potential to trigger strong immune responses in patients. EtoxiClear® comprises a proprietary synthetic ligand derived from Astrea Bioseparations’ Mimetic Ligand™ technology coupled to the PuraBead® 6XL agarose base matrix. The adsorbent has been designed to provide high affinity for endotoxin while maintaining low non-specific protein binding, enabling effective endotoxin clearance alongside high target protein recovery. The adsorbent is suitable for process development, sample and buffer preparation, and product polishing applications used during cGMP manufacture of biological molecules.
Purified immunoglobulin solutions containing endotoxin were processed across both bench-scale and process-scale configurations to evaluate scalability, impurity clearance performance, and product recovery throughout increasing process scale.
The study demonstrated highly effective endotoxin clearance performance across all evaluated formats while supporting excellent immunoglobulin recovery and consistent chromatographic behavior during scale-up.
Across all evaluated scales, EtoxiClear® demonstrated greater than 4.5 log endotoxin clearance, reducing endotoxin levels to below 0.1 EU/mg while maintaining excellent immunoglobulin recovery. The results additionally demonstrated seamless transfer from bench-scale development columns through to larger process-scale Evolve®D formats without significant changes in process performance.
Importantly, the study demonstrated consistent chromatographic behavior, robust impurity clearance, and favorable recovery characteristics across all evaluated column configurations, supporting the suitability of the Evolve® platform for real-world manufacturing purification workflows where scalability, robustness, and impurity clearance are critical process requirements.
The data further highlights the capability of the Evolve® platform to support practical implementation of endotoxin removal workflows across development and manufacturing environments while delivering consistent operational and hydrodynamic performance.
Conclusion
This application note demonstrated the capability of the Evolve®D platform to support scalable chromatography processes across a broad range of resin chemistries, purification workflows, and process-scale formats. MiMode PuraBead® CX2 demonstrated excellent compression packing behavior, stable bed consolidation, and consistent chromatographic performance throughout scale-up, while preserving low operational pressure and strong hydrodynamic efficiency across all evaluated Evolve®D columns.
Additional studies using commercially available Protein
A affinity resins further demonstrated the flexibility of the platform to support third-party agarose-based media while maintaining reproducible packed-bed performance and scalable operational robustness using manufacturerrecommended packing methodologies.
Real-world process applicability was additionally demonstrated using EtoxiClear® endotoxin removal workflows across both Evolve®R process development columns and Evolve®D manufacturing-scale formats. The studies demonstrated effective endotoxin clearance alongside excellent product recovery and seamless transfer from development through to larger process-scale operation.
Collectively, the data confirms that the Evolve®D platform provides a scalable, manufacturing-ready chromatography solution capable of supporting modern downstream purification workflows while delivering consistent packing performance, operational reliability, and process flexibility across multiple applications and process scales.
Astrea Bioseparations is a world class provider of chromatography adsorbent and resin services. With over 30 years of chromatography manufacturing expertise, we deliver a unique and trusted service in close partnership with our clients. For more information, please don’t hesitate to reach out at sales@astrea-bio.com or visit astreabioseparations.com.