Hitachi LaChromUltra Ultra-High-Performance Liquid Chromatograph (UHPLC)

Overview

The Hitachi LaChromUltra is an ultra-high-performance liquid chromatograph engineered for precision, speed, and method flexibility in regulated and research laboratory environments. Based on high-pressure liquid chromatography (HPLC) principles extended into the UHPLC domain, it operates at up to 60 MPa (8700 psi), enabling the use of sub-2-µm particle-packed columns for significantly enhanced resolution, peak capacity, and analysis throughput. Unlike conventional HPLC systems, the LaChromUltra achieves separation efficiencies exceeding 200,000 theoretical plates per meter under optimized conditions—critical for complex matrix analysis in pharmaceutical QC, natural product profiling, and impurity quantification. Its dual-pump architecture supports precise binary gradient formation with minimal dwell volume, while the integrated column oven and low-dead-volume fluidic path minimize retention time drift and thermal band broadening. The system was originally designed for seamless compatibility with both UHPLC-optimized methods (e.g., USP , ICH Q2(R2)) and legacy HPLC protocols—facilitating method transfer without hardware reconfiguration.

Key Features

• Dual L-2160U high-pressure reciprocating pumps with series-connected pistons to suppress pulsation; flow accuracy ±0.1% RSD over 0.001–5.000 mL/min range
• L-2200U autosampler with pressure-rated injection valve (60 MPa), 0.1–20 µL programmable loop injection, and <0.003% carryover after single wash (validated with methylparaben)
• L-2300 column oven featuring pre-heated air circulation and ±0.2 °C temperature stability across 1–65 °C range (1 °C setpoint resolution)
• L-2400U UV-Vis detector with dual-beam optics, deuterium lamp primary source, mercury lamp for wavelength verification, and selectable response times down to 0.01 s
• Integrated organizer module providing centralized power distribution, solvent bottle mounting, and mechanical alignment for pump–injector–detector interconnection
• Universal fingertight fittings compatible with both 2-µm UHPLC and 3–5-µm HPLC columns—enabling rapid column switching without tools or leakage risk

Sample Compatibility & Compliance

The LaChromUltra accommodates standard 2.1 mm × 50–150 mm UHPLC columns as well as wider-bore 4.6 mm ID HPLC columns, supporting reversed-phase, HILIC, ion-exchange, and size-exclusion applications. It meets essential regulatory expectations for analytical instrument qualification: its hardware architecture enables IQ/OQ documentation, and software operation (Empower™ 2 or EZChrom Elite™) supports 21 CFR Part 11-compliant user access control, electronic signatures, and audit trail generation when deployed on validated Windows® XP workstations. All components—including pump seals, injector rotor seals, and detector flow cells—are traceable to original Hitachi manufacturing lots. This unit has undergone full functional verification at SpectraLab Scientific per ASTM E2689-21 guidelines for used analytical instrumentation, confirming baseline noise ≤±0.5 × 10⁻⁵ AU, wavelength accuracy ±1 nm, and retention time repeatability ≤0.15% RSD (n = 6 injections).

Software & Data Management

Data acquisition and processing are performed via licensed copies of Waters Empower™ 2 or Thermo Fisher EZChrom Elite™—both validated for GxP workflows. The workstation includes a dedicated Windows® XP PC with preconfigured instrument drivers, sequence templates, and report generators compliant with ISO/IEC 17025 reporting requirements. Raw data files (.raw, .ch) are stored with embedded metadata (instrument parameters, calibration logs, user IDs), and all processing events—including integration parameter changes—are recorded in immutable audit trails. Backups are supported via network-attached storage or external SATA drives; no cloud synchronization or third-party telemetry is enabled by default. For laboratories transitioning from legacy HPLC to UHPLC, method conversion wizards assist in scaling gradient times, flow rates, and injection volumes based on column geometry and particle size ratios.

Applications

• Pharmaceutical stability-indicating assays requiring resolution of closely eluting degradants (e.g., oxidation products, hydrolysis variants)
• High-throughput screening of small-molecule libraries in drug discovery pipelines
• Quantitative residue analysis in food and environmental matrices (e.g., pesticide multiresidue methods per EU SANTE/11312/2021)
• Peptide mapping of monoclonal antibodies using shallow gradients and sub-2-µm C18 columns
• Method development support for bioanalytical LC-MS workflows where robustness and reproducibility are prerequisites for MS interface coupling

FAQ

Is this unit fully refurbished or sold “as-is”?

This LaChromUltra system has undergone comprehensive functional testing and calibration verification at SpectraLab Scientific’s ISO 9001-certified facility. All consumables—including pump inlet filters, purge valves, and autosampler syringe seals—have been replaced. It is not a bare-bones “as-is” unit.
Does the 6-month warranty cover parts and labor?

Yes—the warranty includes onsite or depot-based technical support, replacement of defective OEM components, and labor for corrective actions related to hardware failure under normal operating conditions.
Can this system be upgraded to include a mass spectrometer interface?

The L-2400U UV detector lacks built-in ESI or APCI ports; however, the system’s low-flow capability (down to 0.001 mL/min) and minimal extra-column volume make it suitable for post-column splitting into commercial LC-MS interfaces (e.g., Thermo Scientific Vanquish EASY-Spray or Waters ACQUITY UPLC M-Class). Integration requires third-party flow splitter and interface kit.
Are original Hitachi service manuals and spare parts available?

SpectraLab maintains a proprietary archive of Hitachi LaChromUltra service documentation, including schematics, firmware update logs, and part number cross-references. Critical spares (e.g., pump heads, injector stators) are stocked for immediate dispatch.
What validation documentation accompanies the instrument?

A Certificate of Operational Verification (COV) is provided, listing test procedures executed (per ASTM E2689), observed performance metrics, and technician sign-off. Full IQ/OQ protocol templates are included for customer-adapted execution.