DAC Acrylic Column Tube – Norlite Axial Compression System by NCA Ltd

Overview

The DAC Acrylic Column Tube – Norlite Axial Compression System is a precision-engineered, dynamically controlled chromatographic column assembly designed for high-integrity preparative and process-scale liquid chromatography in biopharmaceutical, pharmaceutical, and food-grade applications. Unlike conventional stainless-steel or glass columns, the Norlite system utilizes optically transparent, high-purity polymethyl methacrylate (PMMA) engineered to meet USP Class VI biological safety requirements — verified through USP <87> cytotoxicity screening and USP <88> implantation testing. Its dynamic axial compression mechanism maintains consistent bed density and eliminates channeling during extended operation, enabling reproducible separation performance across hundreds of cycles. The system operates on the principle of pneumatically or hydraulically actuated axial force application directly onto the top frit, allowing real-time adjustment of column packing pressure without disassembly — a critical capability for maintaining resolution stability during gradient elution or scale-up from analytical to manufacturing runs.

Key Features

• USP Class VI-certified PMMA construction (NORLITE® grade), validated per ISO 10993-5 and ISO 10993-12 for cytotoxicity, sensitization, and intracutaneous reactivity
• FDA 21 CFR 177.1010 compliance for repeated food-contact use — suitable for chromatographic purification of food-grade excipients, natural extracts, and nutraceuticals
• TSE-free and animal-origin-free material supply chain — fully documented traceability aligned with ICH Q5A(R2) and EMA Guideline on Viral Safety
• Optical transparency enables real-time visual monitoring of bed integrity, bubble formation, and mobile phase front progression
• Modular design supports custom diameters (25 mm to 300 mm ID) and lengths (100 mm to 1,200 mm), with integrated O-ring grooves and standardized end-fittings (e.g., ISO-KF, DIN 28178)
• Dynamic compression range: 0–15 MPa (adjustable via external pressure regulator), with integrated load cell feedback for closed-loop pressure control

Sample Compatibility & Compliance

The Norlite DAC column tube is compatible with all standard HPLC, flash, and preparative chromatography solvents — including acetonitrile, methanol, ethanol, ethyl acetate, and aqueous buffers across pH 1–13. Its inert PMMA surface minimizes metal leaching and secondary interactions, ensuring compatibility with sensitive biomolecules (monoclonal antibodies, plasmid DNA, viral vectors) and labile small molecules (peptides, glycosides, terpenes). Regulatory documentation includes full USP <87>/<88> test reports, extractables profiling per USP <1663>, and biocompatibility dossiers supporting submissions under FDA BLA/MAA pathways and EMA CHMP guidelines. All units are supplied with Certificate of Conformance (CoC), material traceability records, and batch-specific bioburden and particulate data.

Software & Data Management

While the Norlite DAC system operates as a hardware-integrated mechanical platform, it is fully compatible with third-party chromatography data systems (CDS) such as Waters Empower, Thermo Chromeleon, and Agilent OpenLab CDS. Pressure transducers and position encoders can be interfaced via 4–20 mA or RS-485 outputs for integration into SCADA or MES environments. Audit trails, user access controls, and electronic signatures comply with FDA 21 CFR Part 11 when paired with validated CDS configurations. Raw compression force logs and cycle counters are timestamped and exportable in CSV format for GMP batch record linkage.

Applications

• Preparative purification of therapeutic proteins and vaccines under cGMP conditions
• Process development of continuous chromatography trains using simulated moving bed (SMB) or periodic counter-current (PCC) architectures
• Food ingredient isolation (e.g., anthocyanins, curcuminoids, caffeine) requiring non-metallic contact surfaces
• Method transfer studies where column transparency aids troubleshooting of overloading, precipitation, or air entrapment
• Academic and contract research labs requiring rapid column reconfiguration between resin types (e.g., Protein A, ion exchange, hydrophobic interaction)

FAQ

Is the Norlite DAC column suitable for high-pressure UHPLC applications?

No — the system is rated for dynamic axial compression up to 15 MPa but is not designed for ultra-high-pressure liquid chromatography (UHPLC) above 1,000 bar. It is optimized for preparative-scale operations at ≤200 bar.
Can the acrylic tube be sterilized using steam or gamma irradiation?

Gamma irradiation (25–40 kGy) is validated and recommended; autoclaving is not permitted due to PMMA’s glass transition temperature (~105 °C). Ethylene oxide (EtO) and vaporized hydrogen peroxide (VHP) are also approved sterilization methods.
Does NCA provide validation support for IQ/OQ/PQ protocols?

Yes — NCA supplies vendor-specific qualification templates, calibration certificates for integrated sensors, and technical assistance for site-specific protocol execution in accordance with ASTM E2500 and ISPE Baseline Guide Vol. 5.