KNAUER IJM DuoCore NanoProducer Impingement Jet Mixer System

Overview

The KNAUER IJM DuoCore NanoProducer is a fully integrated, GMP-ready microfluidic impingement jet mixing platform engineered for the reproducible, scalable synthesis of lipid nanoparticles (LNPs), particularly those encapsulating nucleic acid therapeutics such as mRNA, siRNA, and DNA. Unlike conventional high-shear homogenizers or sonication-based methods, the system relies on precisely controlled hydrodynamic impingement—where two opposing laminar streams (e.g., ethanolic lipid solution and aqueous API buffer) collide at ultra-high velocity within a geometrically optimized mixing chamber. This transient, millisecond-scale turbulent mixing induces rapid solvent displacement and supersaturation-driven self-assembly, yielding narrow polydispersity index (PDI 90%) and batch-to-batch consistency. The DuoCore architecture incorporates two independent IJM modules operating in parallel or sequential mode, enabling process intensification, gradient screening, or dual-formulation capability without hardware reconfiguration.

Key Features

• Dual impingement jet mixing cores housed in a single stainless-steel (1.4301) frame, each with dedicated flow control and real-time pressure monitoring
• Eight KNAUER 80P high-precision, pulseless high-pressure metering pumps delivering stable flow across 0.01–2 L/min range with ≤0.5% CV repeatability
• Eight KNAUER Coriolis mass flowmeters providing true mass-based flow measurement independent of fluid density, viscosity, or temperature drift
• Integrated back-flush cleaning system with programmable solvent sequences (e.g., ethanol → water → buffer) to prevent cross-contamination between runs
• TC (Tri-Clamp) 1/2″ sanitary fittings throughout—six inlets (for lipid/ethanol, mRNA/buffer, quenching agent, cleaning solvents, purge gas, and reference pressure taps) and two dedicated outlets (primary LNP product + bypass/recirculation)
• Temperature-controlled fluid path with Peltier-regulated heat exchangers maintaining ±0.3 °C stability across 4–60 °C operating range
• Full compliance with mechanical safety standards (EN ISO 13857, EN 61000-6-4) and electrical safety (EN 61010-1)

Sample Compatibility & Compliance

The IJM DuoCore NanoProducer supports a broad range of formulation chemistries, including ionizable cationic lipids (e.g., DLin-MC3-DMA, ALC-0315), phospholipids (DSPC), cholesterol, PEG-lipids, and aqueous-phase nucleic acids (mRNA, saRNA, circRNA) in Tris, citrate, or acetate buffers. All wetted materials—including mixer chambers, pump heads, and tubing—are certified USP Class VI and FDA-compliant for pharmaceutical use. The system meets ISO 13485:2016 requirements for medical device manufacturing and supports full audit trail generation per FDA 21 CFR Part 11 and EU Annex 11. Factory Acceptance Testing (FAT) and Site Acceptance Testing (SAT) protocols are executed using traceable calibration standards and documented in IQ/OQ/PQ-ready reports aligned with GAMP 5 principles.

Software & Data Management

Control and data acquisition are managed via KNAUER’s CDS (Chromatography Data System) v5.x, a validated platform designed for regulated environments. CDS provides role-based user access control, electronic signatures, change tracking, and immutable audit trails for all critical parameters—including flow rates, pressures, temperatures, valve actuation events, and cleaning cycles. All raw data (including time-stamped analog signals from flowmeters and pressure transducers) are stored in encrypted .CDF format with SHA-256 checksum integrity verification. Export options include CSV, PDF e-signature reports, and direct integration with LIMS or MES systems via OPC UA or RESTful API.

Applications

• Preclinical and clinical-stage LNP formulation development for mRNA vaccines and gene therapies
• High-throughput screening of lipid ratios, molar concentrations, and flow rate gradients under GxP conditions
• Process validation and tech transfer from lab-scale (1–5 mL/min) to pilot-scale (up to 2 L/min) without re-optimization
• Manufacturing of sterile-filterable LNP suspensions (post-dilution) meeting USP particulate matter requirements
• Stability studies requiring precise thermal control during mixing to assess particle size evolution under defined quenching kinetics
• Development of non-viral delivery systems for CRISPR-Cas ribonucleoproteins (RNPs) and plasmid DNA

FAQ

What is the minimum viable batch volume supported by the IJM DuoCore NanoProducer?
The system achieves stable impingement mixing down to 50 mL total formulation volume when operated at reduced flow rates (≤0.1 L/min) with appropriate dilution and quenching strategy.
Can the system be qualified for sterile manufacturing?
Yes—the entire fluid path is autoclavable (121 °C, 20 min), and the frame supports SIP (steam-in-place) integration with external utilities; full aseptic processing qualification requires customer-specific media fill studies.
Is remote monitoring and troubleshooting supported?
CDS includes secure TLS 1.2-enabled remote desktop access with configurable firewall rules and session logging, approved for use in controlled network environments per IEC 62443-3-3.
How does the DuoCore configuration improve process robustness compared to single-core IJM systems?
Dual-core operation allows real-time comparison of two distinct mixing geometries or flow regimes within one run, eliminating inter-run variability and accelerating DOE-based optimization.
What documentation is provided for regulatory submissions?
KNAUER supplies complete DQ/IQ/OQ documentation packages, FAT/SAT reports, material certifications (EN 10204 3.1), and software validation summaries aligned with ICH Q5A(R2), Q5B, and Q5D guidance.