UC-3232 Isocratic High-Performance Liquid Chromatograph System by Youlian Optoelectronics
| Brand | Youlian Optoelectronics |
|---|---|
| Origin | Beijing, China |
| Model | UC-3232 |
| Instrument Type | Conventional HPLC System |
| Flow Rate Range | 0.001–9.999 mL/min |
| Maximum Pressure | 42 MPa |
| Wavelength Range | 190–740 nm |
| Data Acquisition Frequency | 10 Hz |
| Flow Accuracy | <0.4% RSD (at 1 mL/min, deionized water, 25°C) |
| Flow Precision | 0.1% RSD (at 1 mL/min, deionized water, 25°C) |
| Pressure Pulsation | <0.05 MPa (at 1 mL/min, deionized water, 25°C) |
| Gradient Accuracy | ±1% |
| Wavelength Accuracy | ±1 nm |
| Baseline Noise | 2×10⁻⁵ AU (240 nm, 25°C) |
| Baseline Drift | 15×10⁻⁵ AU/h (240 nm, 25°C) |
| LOD | 5×10⁻⁹ g/mL (naphthalene, 254 nm, methanol mobile phase, 25°C) |
Overview
The UC-3232 Isocratic High-Performance Liquid Chromatograph System is a modular, benchtop HPLC platform engineered for precision, reliability, and operational flexibility in routine analytical laboratories. Designed around classical reversed-phase and normal-phase chromatographic principles, the system employs high-pressure liquid delivery and UV-Vis absorbance detection to separate, identify, and quantify analytes in complex mixtures. Its core architecture supports both isocratic elution and optional low-pressure quaternary gradient configuration—enabling method scalability without hardware replacement. The dual-piston reciprocating pump utilizes electronic pressure pulsation suppression instead of mechanical dampeners, delivering stable flow profiles critical for retention time reproducibility and peak shape fidelity. Coupled with a digitally processed UV-Vis detector featuring programmable wavelength scanning and time-based wavelength scheduling, the UC-3232 meets the fundamental performance requirements for pharmacopeial testing, quality control, and academic research applications where regulatory traceability and method robustness are essential.
Key Features
- Modular block-style design allows field-upgradable configurations—from basic isocratic operation to full quaternary gradient capability.
- Dual-plunger series pump with real-time electronic pressure pulsation compensation ensures flow stability <0.05 MPa at 1 mL/min, minimizing baseline disturbance and improving integration accuracy.
- UV-Vis detector equipped with a deuterium lamp source and full digital signal processing delivers high signal-to-noise ratio (2×10⁻⁵ AU baseline noise at 240 nm) and precise wavelength control (±1 nm accuracy).
- Stop-flow spectral scanning function enables rapid acquisition of full UV spectra for peak purity assessment and compound identification.
- Replaceable pump head and flow cell modules simplify preventive maintenance, extend service life, and reduce downtime during component wear or method adaptation.
- Integrated self-diagnostic routines perform automated checks of pressure response, lamp status, flow calibration, and communication integrity prior to run initiation.
- Full bidirectional RS-232 interface enables complete instrument parameter control—including flow rate, pressure limit, wavelength, scan mode, and gradient profile—via external chromatography data system software.
Sample Compatibility & Compliance
The UC-3232 accommodates standard 3.9–4.6 mm ID analytical columns and is compatible with common reversed-phase (C8, C18), polar-embedded, and HILIC stationary phases. It supports mobile phases including aqueous buffers (e.g., phosphate, acetate), organic modifiers (acetonitrile, methanol), and low-viscosity additives (0.1% TFA, 0.05% formic acid). The system operates within ISO/IEC 17025-aligned workflows and supports audit-trail-capable data acquisition when paired with compliant chromatography data systems (CDS). While not pre-certified for FDA 21 CFR Part 11 out-of-the-box, its deterministic control logic, parameter logging, and hardware-level error reporting provide foundational elements required for GxP validation. Method transfer studies confirm compatibility with USP , EP 2.2.46, and ASTM D7777 protocols for pharmaceutical impurity profiling and chemical assay validation.
Software & Data Management
The UC-3232 integrates with third-party chromatography data systems via standardized RS-232 command sets compliant with ASTM E1319 and ANSI/AAMI CI82. Its embedded firmware supports real-time parameter feedback—including actual flow rate, measured pressure, lamp energy, and detector absorbance—and logs all setpoints and alarms with timestamps. The LCD display (2×16 characters) provides local status verification independent of PC connectivity. When used with validated CDS platforms, raw analog-to-digital conversion data (10 Hz sampling) is preserved in vendor-neutral formats (e.g., .CDF, .ARW), supporting reprocessing, peak deconvolution, and multi-batch trending. All method files—including wavelength programs, flow gradients, and injection sequences—are stored externally, enabling version-controlled documentation per GLP and internal SOP requirements.
Applications
- Pharmaceutical QC: Assay of active pharmaceutical ingredients (APIs), related substances testing, and excipient quantification per ICH Q2(R2) guidelines.
- Food & Beverage: Detection of preservatives (benzoates, sorbates), artificial colors (tartrazine, sunset yellow), and mycotoxins (aflatoxin B1) in fortified and processed matrices.
- Environmental Analysis: Quantification of phenolic compounds, PAHs, and chlorinated pesticides in wastewater and soil extracts using EPA Method 8330B-compliant conditions.
- Academic Research: Method development for natural product isolation, polymer additive screening, and small-molecule metabolite profiling in plant and microbial extracts.
- Chemical Manufacturing: In-process monitoring of reaction intermediates, catalyst leaching studies, and batch release testing of specialty solvents and monomers.
FAQ
Is the UC-3232 compliant with FDA 21 CFR Part 11?
The instrument itself does not include built-in electronic signature or audit trail functionality; however, its deterministic control architecture and parameter logging interface support integration with validated CDS platforms that meet Part 11 requirements.
Can the system be upgraded from isocratic to gradient operation in the field?
Yes—the modular design permits installation of a quaternary low-pressure mixing valve, solvent selection valves, and associated firmware updates without replacing the main pump or detector chassis.
What column dimensions and fittings are supported?
Standard 3.9 mm × 150 mm and 4.6 mm × 250 mm stainless steel columns with 1/16″ OD stainless tubing and universal 10-32 threaded fittings are fully compatible.
Does the detector support post-run spectral library matching?
Spectral scans are exported as ASCII or .CSV files containing wavelength vs. absorbance pairs; third-party chemometric tools (e.g., OpenChrom, Chromeleon) can perform library search and purity analysis.
What maintenance intervals are recommended for routine operation?
Pump seal replacement every 6–12 months (depending on mobile phase corrosivity), lamp replacement every 1,000–2,000 hours, and flow cell cleaning after every 200 injections with high-salt or viscous samples.
