LC-100 Isocratic High-Performance Liquid Chromatography System

Overview

The LC-100 Isocratic High-Performance Liquid Chromatography System is an engineered solution for routine qualitative and quantitative analysis of small-molecule compounds in pharmaceutical, environmental, food safety, and academic research laboratories. Built upon a dual-piston reciprocating parallel pump architecture, the system delivers high flow accuracy and minimal pressure pulsation—critical for baseline stability and reproducible retention time alignment across repeated injections. Its isocratic operation mode supports consistent mobile phase composition delivery, making it ideal for method development, QC release testing, and stability-indicating assays where gradient complexity is unnecessary. The system complies with core design principles aligned with ISO/IEC 17025 requirements for analytical instrument validation and meets functional expectations for GLP-compliant environments when operated under documented SOPs.

Key Features

• Reciprocating parallel high-pressure pump with dual ceramic pistons, achieving flow precision ≤0.3% RSD and flow accuracy within ±2% of setpoint across the full 0.001–9.999 mL/min range.
• Integrated auto-retracting plunger mechanism enables seal replacement without disassembling the pump head or exposing internal components—reducing downtime and mitigating risk of piston rod damage.
• Monolithic sapphire-ball check valve assembly ensures long-term sealing integrity and minimizes backflow-induced flow deviation, contributing to improved retention time reproducibility (≤0.1% RSD).
• Column oven with Peltier-based heating/cooling maintains temperature stability of ±0.1 °C from +5 °C above ambient to 80 °C, supporting method robustness across seasonal lab conditions.
• UV-Vis detector featuring a low-noise photodiode array optics path, 8 nm spectral bandwidth, and 8 µL flow cell—delivering baseline noise ≤±0.25 × 10⁻⁵ AU (empty cell, 1 sec response) and detection limit of ≤5 × 10⁻⁹ g/mL (naphthalene in methanol).
• Full-system remote control via Ethernet interface; real-time monitoring of pump pressure, flow rate, detector absorbance, and oven temperature through embedded firmware UI or optional PC-based software.

Sample Compatibility & Compliance

The LC-100 accommodates standard 3.9–4.6 mm ID analytical columns packed with C18, C8, phenyl-hexyl, or HILIC phases. It supports aqueous-organic mobile phases including phosphate and acetate buffers (pH 2–8), with optional post-column wash functionality to mitigate salt crystallization in pump seals. All wetted parts—including tubing, fittings, and flow cells—are constructed from chemically resistant 316L stainless steel, PEEK, and fused silica. While not pre-certified for FDA 21 CFR Part 11 compliance, the system’s audit-trail-capable software module (optional upgrade) supports electronic signature, user-level access control, and data integrity features required for regulated GMP/QbD workflows. It aligns with ASTM D7097 (hydrocarbon analysis), USP (chromatographic separations), and ISO 17025 clause 6.4.10 on equipment suitability verification.

Software & Data Management

The LC-100 operates with ChromNav Lite—a Windows-based acquisition and processing platform supporting isocratic method setup, peak integration (tangent skim, valley-to-valley), calibration curve generation (linear, quadratic, weighted), and report export in PDF, CSV, and XML formats. Raw data files (.raw) are stored with embedded metadata (instrument ID, operator, date/time stamp, method parameters). Optional ChromNav Pro adds multi-user login, electronic signature support, automated system suitability testing (SST), and audit trail logging compliant with ALCOA+ principles. Data backups are configurable to network drives or NAS devices; no cloud storage is enabled by default to preserve data sovereignty.

Applications

• Pharmaceutical QC: Assay and related substances testing per USP monographs for APIs and finished dosage forms.
• Environmental labs: Quantification of pesticides (e.g., organophosphates, triazines) in water extracts using EPA Method 531.1.
• Food & beverage: Caffeine, preservatives (sorbic acid, benzoic acid), and artificial colors (Allura Red AC, Tartrazine) in soft drinks and dairy products.
• Academic research: Separation and quantification of flavonoids, alkaloids, and phenolic acids in plant extracts.
• Chemical manufacturing: Purity assessment of synthetic intermediates and final products under ISO 9001-controlled processes.

FAQ

Is the LC-100 compatible with gradient elution methods?
No—the base LC-100 Isocratic System is configured exclusively for constant-composition mobile phase delivery. Gradient capability requires upgrading to the LC-100 Quaternary Low-Pressure Mixing Module or Semi-Preparative Pump variant.
What maintenance intervals are recommended for pump seals?
Under typical use (acetonitrile/water mobile phases, ≤30 MPa average pressure), sapphire-ball check valves and PTFE seals require inspection every 6 months and replacement every 12–18 months. Use of buffer-containing mobile phases reduces interval by ~40% unless post-run wash protocols are strictly followed.
Can the UV detector be upgraded to a DAD or RI detector post-purchase?
Yes—LC-100 modular architecture supports field installation of LC-UV100-DAD (diode array) or LC-RID100 (refractive index) detectors via standardized electrical and fluidic interfaces.
Does the system support 21 CFR Part 11 compliance out-of-the-box?
No—Part 11 compliance requires the optional ChromNav Pro software license, configured user roles, external time-server synchronization, and documented validation protocol execution per your organization’s quality system.
What column dimensions are validated for use with this system?
The LC-100 is validated for 150 mm × 4.6 mm I.D. columns at flow rates up to 3.0 mL/min. Shorter columns (50–100 mm) and narrow-bore formats (2.1 mm I.D.) are supported with appropriate flow rate recalibration and system dwell volume characterization.