CoMetro CP-LDI Parallel Dual-Piston High-Pressure Constant Flow Pump for LNP & Liposome Nanoparticle Formulation Systems
| Brand | CoMetro |
|---|---|
| Model | CP-LDI |
| Flow Rate | 10 mL/min |
| Maximum Pressure | 6000 psi |
| Pump Head Material Options | S316L Stainless Steel, PEEK |
| Flow Pulsation | <0.5% RSD (typical) |
| Control System | Integrated Electronic Motor Drive with Real-Time Pressure Feedback Loop |
| Cleaning Function | Automated Solvent Flush Protocol for Piston Seal Maintenance |
| Compliance | Designed for GLP-compliant nanoparticle synthesis workflows |
Overview
The CoMetro CP-LDI is a precision-engineered parallel dual-piston high-pressure constant flow pump specifically developed for reproducible, scalable formulation of lipid-based nanocarriers—including liposomes and lipid nanoparticles (LNPs)—in pharmaceutical development and GMP-aligned research laboratories. It operates on the principle of positive displacement via synchronized, electronically controlled dual pistons, delivering ultra-stable volumetric flow under high backpressure conditions typical of microfluidic mixing, T-junction nanoprecipitation, and ethanol-injection-based LNP synthesis. Unlike single-piston systems, its parallel architecture minimizes pulsation amplitude (<0.5% RSD across full flow range), ensuring consistent hydrodynamic shear and residence time distribution—critical parameters governing particle size polydispersity (PDI), encapsulation efficiency, and batch-to-batch reproducibility in mRNA-LNP manufacturing.
Key Features
- Parallel dual-piston pump head design with phase-shifted actuation to suppress flow pulsation and maintain laminar delivery stability at pressures up to 6000 psi (414 bar)
- Integrated electronic control system featuring brushless DC motor drive, real-time pressure transduction, and closed-loop flow regulation across the entire operating range (0.01–10 mL/min)
- Chemically resistant wetted path options: electropolished S316L stainless steel for aqueous/organic solvent compatibility or PEEK for enhanced resistance to aggressive solvents (e.g., chloroform, isopropanol, ethanol)
- Automated solvent flush protocol programmable via front-panel interface or remote command—designed to remove residual buffer salts and prevent crystallization at piston seals, extending service life of critical wear components
- Modular architecture supporting integration into automated LNP formulation platforms, including compatibility with third-party microfluidic mixers (e.g., NanoAssemblr®, Precision Nanosystems), syringe pump controllers, and process data acquisition systems
Sample Compatibility & Compliance
The CP-LDI is validated for use with standard LNP formulation solvents (ethanol, isopropanol, acetone), lipid stock solutions (DSPC, cholesterol, DMG-PEG2000, ionizable lipids), and aqueous phase buffers (citrate, Tris-HCl, PBS). Its fluidic path meets USP Class VI biocompatibility requirements when configured with PEEK components. The pump supports traceable operation under Good Laboratory Practice (GLP) and early-phase Good Manufacturing Practice (GMP) environments: all flow and pressure setpoints are digitally logged with timestamping; firmware supports audit trail export (CSV/Excel) compliant with FDA 21 CFR Part 11 Annex 11 principles. It is routinely deployed in labs conducting preclinical LNP process development aligned with ICH Q5A(R2) and Q5D guidelines.
Software & Data Management
The CP-LDI operates via an embedded 32-bit ARM-based controller with RS-232, USB, and optional Ethernet interfaces. A dedicated Windows-compatible configuration utility enables remote parameter setting (flow rate, pressure limit, flush duration), real-time monitoring of motor current, piston position, and system pressure, and event-triggered data logging. All operational parameters—including start/stop timestamps, flow deviation alerts, and maintenance cycles—are stored internally with 32 MB non-volatile memory. Exported logs include ISO 8601 timestamps and support CSV parsing for integration into LIMS or electronic lab notebooks (ELN) such as LabArchives or Benchling.
Applications
- Microfluidic-based LNP synthesis for mRNA vaccine candidates and siRNA therapeutics
- Controlled ethanol injection processes for liposomal doxorubicin and amphotericin B formulations
- Continuous-flow nanoprecipitation of polymeric and hybrid lipid-polymer nanoparticles
- High-pressure gradient delivery in analytical-scale lipid screening assays (e.g., DSC, cryo-TEM sample prep)
- Integration into automated platform systems for DOE-driven formulation optimization (e.g., Design-Expert®-linked workflows)
FAQ
What flow rate accuracy can be expected across the 0.01–10 mL/min range?
Flow accuracy is ±0.5% of setpoint at steady state, verified per ISO 5725-2:2019 repeatability protocols using gravimetric calibration with certified Class A glassware.
Is the CP-LDI compatible with organic solvent-rich mobile phases commonly used in LNP synthesis?
Yes—when equipped with PEEK pump heads and seals, it maintains integrity in ≥95% ethanol, isopropanol, and acetone; S316L configurations are recommended for aqueous-buffer-dominant formulations.
Does the system support multi-pump synchronization for asymmetric flow ratio control?
Yes—the CP-LDI includes TTL-level trigger input/output ports enabling precise temporal coordination with auxiliary pumps (e.g., aqueous phase delivery) for defined mixing ratios (e.g., 3:1 ethanol:buffer) without external PLC intervention.
How often is preventive maintenance required for the piston seals?
Under typical LNP formulation conditions (daily 8-hour operation, automated flush after each run), seal replacement interval exceeds 6 months; extended lifetime is documented in internal CoMetro MTBF reports (Ref. CP-LDI-MTBF-2023-08).
