Waters ACQUITY UPLC I-Class PLUS System (SM-FL) - Instrument Specifications

Importance of the Topic

The advancement of ultrahigh-performance liquid chromatography (UHPLC) systems has revolutionized analytical workflows, enabling greater sensitivity, improved peak capacity and enhanced throughput in pharmaceutical, environmental and industrial laboratories.

Objectives and Overview

This document presents the Waters ACQUITY UPLC I-Class PLUS System with Fixed-Loop Sample Manager, designed to maximize chromatographic performance for MS-based applications. The system aims to deliver minimal dispersion, precise solvent delivery and robust automation for high-throughput analysis.

Used Instrumentation

• Binary Solvent Manager (BSM) with four solvent lines and high-pressure mixing
• Sample Manager with Fixed-Loop (SM-FL) enabling injections from 0.1 to 250 µL
• Column Heater modules (CH-A) for single-column temperature control
• Column Manager module (CM-A) supporting two columns and 2D-LC workflows
• Sample Organizer for storage of up to 7,296 samples
• Empower, MassLynx or UNIFI software for system control and data acquisition

Main Performance Characteristics

• System dispersion: ≤7 µL bandspread; dwell volume ≤95 µL; gradient delay ≤75 µL
• Flow range from 0.001 to 2.0 mL/min; pressure up to 18,000 psi at 1 mL/min
• High flow precision (≤0.075% RSD) and compositional accuracy (±0.5%)
• Injection precision <1% RSD for low volumes; carryover ≤0.001%
• Column temperature control from 4 to 90 °C with ±0.5 °C accuracy
• Sample compartment control from 4 to 40 °C; capacity for multiple plate types

Benefits and Practical Applications

• Enhanced sensitivity and resolution for trace-level analysis
• Rapid cycle times (<15 s) support high-throughput screening
• Comprehensive automation reduces manual intervention and error
• Flexible configuration suitable for pharmaceutical QC, metabolomics and environmental testing

Future Trends and Applications

• Integration of two-dimensional LC for complex sample separation
• Adoption of AI-driven method development and real-time diagnostics
• Miniaturized flow paths to further reduce dispersion and solvent consumption
• Green chemistry approaches with novel solvent systems
• Cloud-based monitoring and IoT connectivity for predictive maintenance

Conclusion

The ACQUITY UPLC I-Class PLUS System with Fixed-Loop Sample Manager offers a robust platform for modern analytical challenges, delivering high precision, flexibility and throughput. Its advanced fluidics, temperature control and automation capabilities make it a versatile choice for demanding laboratory environments seeking reliable and efficient UHPLC performance.