Agilent 1260 Infinity HPLC Quaternary Pump (G1311B) (Refurbished)

The Agilent Technologies G1311B 1260 Quaternary Pump is a high-performance liquid chromatography (HPLC) pump designed to provide accurate and precise solvent delivery for analytical applications. Part of the Agilent 1260 Infinity Series, this pump is equipped with advanced features to ensure reproducibility and efficiency in HPLC workflows.

The quaternary pump enables low-pressure gradient mixing, allowing users to blend up to four different solvents for flexible and robust gradient elution. Its built-in degasser ensures efficient solvent degassing to minimize bubble formation, which enhances flow stability. With a dual-piston in-series design, the pump delivers superior flow accuracy and precision, accommodating a wide range of flow rates and pressure conditions.

This pump is ideal for laboratories that require high-performance separations, including pharmaceutical analysis, environmental testing, food safety assessments, and research applications. It integrates seamlessly with Agilent’s software solutions, such as ChemStation and OpenLab, for comprehensive control and monitoring.

Technical Specifications

General Specifications

• Product Name: Agilent Technologies G1311B 1260 Quaternary Pump
• Series: 1260 Infinity Series
• Technology: Low-pressure gradient mixing with a high-speed proportioning valve
• Applications: HPLC solvent delivery for gradient and isocratic separations

Performance Specifications

• Hydraulic System: Dual-piston in-series pump with servo-controlled variable stroke drive
• Flow Rate Range: 0.001 – 10 mL/min (settable in 0.001 mL/min increments)
• Flow Precision: ≤ 0.07% RSD or ≤ 0.02 min SD, based on retention time at a constant room temperature
• Flow Accuracy: ± 1% or 10 µL/min (whichever is greater) at 10 MPa (100 bar), using degassed water
• Operating Pressure Range:
  • Up to 600 bar (8700 psi) for flow rates up to 5 mL/min
  • Up to 200 bar (2950 psi) for flow rates up to 10 mL/min
• Pressure Pulsation: < 2% amplitude or < 0.3 MPa (3 bar) at 1 mL/min (measured with isopropanol)
• Compressibility Compensation: User-selectable, based on mobile phase compressibility
• Gradient Formation: Low-pressure quaternary mixing using a high-speed proportioning valve
• Delay Volume: 600 – 900 µL (dependent on back pressure, measured with water at 1 mL/min)
• Composition Precision: < 0.2% RSD or < 0.04 min SD at 1 mL/min

Physical Specifications

• Weight: 14.5 kg (32 lbs)
• Dimensions (H × W × D): 180 × 345 × 435 mm (7.0 × 13.5 × 17 inches)
• Power Requirements:
  • Voltage: 100 – 240 VAC, ± 10%
  • Frequency: 50 or 60 Hz, ± 5%
  • Power Consumption: 110W / 375 BTU

Solvent and Chemical Compatibility

• Number of Solvent Channels: 4
• Integrated Degassing: 4-channel degasser with an internal volume of 1.5 mL per channel
• pH Range: 1.0 – 12.5 (solvents with pH < 2.3 should not contain acids that attack stainless steel)
• Compatible Solvents: Aqueous buffers, organic solvents, and mixed-phase eluents (with limitations on halogenated and highly corrosive solvents)

Control and Communication

• Software Control: Compatible with Agilent ChemStation, EZChrom, OpenLab, and MassHunter
• Local Control: Agilent Instant Pilot interface
• Analog Output: Pressure monitoring (2 mV/bar)
• Communications: CAN (Controller Area Network), RS-232C, APG Remote (ready, start, stop, and shut-down signals), optional LAN interface

Maintenance and Safety Features

• Diagnostics: Extensive error detection and diagnostics through Agilent LabAdvisor
• Leak Detection: Integrated leak sensor with automatic shutdown for safety
• Early Maintenance Feedback (EMF): Monitors component wear and provides alerts for preventive maintenance
• Low-Voltage Maintenance Areas: Designed for user safety during servicing
• Safety Standards Compliance: IEC, CSA, UL certified for lab use

The Agilent Technologies G1311B 1260 Quaternary Pump is a versatile and high-precision HPLC pump designed for applications requiring accurate gradient mixing and solvent delivery. With its advanced diagnostics, built-in degasser, and flexible communication options, it ensures high reliability and performance in laboratories conducting analytical and preparative chromatography. Its robust design, coupled with user-friendly maintenance features, makes it an ideal choice for modern HPLC workflows.