LABA SeriesII Digital High-Pressure Liquid Chromatography Pump

Overview

The LABA SeriesII Digital High-Pressure Liquid Chromatography Pump is an isocratic solvent delivery system engineered for precision, reliability, and operational simplicity in analytical and semi-preparative liquid chromatography applications. Based on a robust dual-piston reciprocating architecture with digital logic control and microstepping stepper motor actuation, the SeriesII delivers stable, pulse-dampened flow across its full operating range—up to 40 mL/min at pressures up to 6000 psi (414 bar), consistent with standard HPLC column specifications. Unlike analog-controlled legacy pumps, its digitally synchronized motor drive enables precise speed modulation and real-time flow calibration without mechanical potentiometers or manual adjustments. The pump operates independently as a standalone isocratic unit or integrates seamlessly into modular chromatography platforms—particularly when paired with a LABA SeriesIII gradient controller, UV-Vis detector, and autosampler—to form a fully functional, cost-optimized binary gradient HPLC system.

Key Features

• Digital microstepping stepper motor drive ensures high reproducibility of flow rate (< ±0.2% RSD over 24 h) and eliminates drift associated with brushed DC motors.
• Self-cleaning pump head design minimizes seal wear and prevents solvent residue accumulation—critical for long-term stability in aqueous/organic mobile phases and bio-compatible buffers.
• Integrated AutoPrime function automates solvent line priming and degassing verification, reducing method setup time and operator dependency.
• LED-based front-panel interface with dedicated keypad provides direct access to flow rate, pressure limit, purge mode, and run/stop controls—no PC required for routine operation.
• Modular mechanical architecture allows field-replaceable components (piston seals, check valves, gaskets) with documented torque specifications and alignment guides per ISO 9001 maintenance protocols.
• Three-year limited warranty covers all electro-mechanical subsystems—including motor driver board, pressure transducer, and piston assembly—validating sustained performance under continuous laboratory use.

Sample Compatibility & Compliance

The SeriesII pump supports a broad range of mobile phase chemistries, including water/acetonitrile, water/methanol, TFA-containing peptides solvents, and phosphate-buffered saline (PBS) formulations. Its wetted path—comprising sapphire-coated stainless steel pistons, PEEK tubing, and chemically resistant ruby/sapphire check valves—is certified for biocompatibility per USP Class VI and ISO 10993-5 standards. The pump’s pressure monitoring circuitry meets IEC 61010-1 safety requirements for laboratory equipment, and its firmware architecture supports audit trail generation and user-level access control—enabling compliance with FDA 21 CFR Part 11 when used with validated third-party CDS software. It is routinely deployed in QA/QC labs conducting method transfer per ICH Q2(R2) guidelines and in academic teaching labs aligned with ASTM E2686 curriculum benchmarks for chromatographic instrumentation.

Software & Data Management

While the SeriesII operates autonomously via its embedded controller, optional RS-232 and USB-B interfaces enable bidirectional communication with third-party chromatography data systems (CDS), including OpenLab CDS, Chromeleon, and Empower. All operational parameters—including actual flow rate, backpressure, motor step count, and error codes—are timestamped and exportable in CSV format. When integrated into a GLP environment, the pump logs events such as prime cycles, pressure limit overrides, and power-on resets with user ID attribution (when paired with external authentication middleware). Firmware updates are performed via signed binary files verified using SHA-256 checksums—ensuring integrity during regulatory audits.

Applications

• Routine isocratic assays in pharmaceutical QC, including dissolution testing (USP ) and excipient purity screening.
• Semi-preparative purification of peptides and oligonucleotides at flow rates up to 40 mL/min on 10–21.2 mm ID columns.
• Method development support in R&D labs requiring rapid mobile phase screening without gradient complexity.
• Undergraduate and graduate chromatography instruction—designed for durability, intuitive operation, and transparent mechanical feedback (e.g., audible piston stroke, visible solvent path).
• Environmental analysis workflows involving EPA Method 8081B (PCBs) and 8330B (explosives), where consistent low-flow precision is critical for trace-level detection.

FAQ

Is the SeriesII pump compatible with gradient elution?
No—the SeriesII is a dedicated isocratic pump. Gradient capability requires integration with a SeriesIII controller or external low-pressure mixing module.
What is the maximum recommended operating pressure?
6000 psi (414 bar) at ambient temperature; derating applies above 40°C per manufacturer’s thermal management specifications.
Can the pump be used with aggressive solvents such as THF or chloroform?
Yes—provided PTFE or Chemraz seals are installed; standard configuration uses FKM elastomers rated for acetonitrile, methanol, and aqueous buffers only.
Does the pump support remote start/stop via TTL signal?
Yes—via optional digital I/O expansion port (pinout documented in Hardware Integration Manual Rev. 3.2).
How often should the pump head be serviced under continuous operation?
Every 6 months or 1000 hours—whichever occurs first—as outlined in the Preventive Maintenance Schedule (P/N MAINT-S2-2024).