Hoofdafbeelding Agilent G1311A Quaternary Pump HPLC 1200 series

Agilent G1311A Quaternary Pump HPLC 1200 series

Article nr.: 8080
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The quaternary pump G1311A comprises a solvent cabinet, a vacuum degasser and a four-channel gradient pump. The four-channel gradient pump comprises a high-speed proportioning valve and a pump assembly. It provides gradient generation by low pressure mixing. Degassing is a must for a low-pressure gradient system therefore the Agilent 1200 Series vacuum degasser is part of the quaternary pump system. A solvent cabinet provides enough space for four one-liter bottles. An active seal wash (optional) is available when the quaternary pump is used with concentrated buffer solutions. 

G1311A Quaternary Pump HPLC 1200

Delay volume: 800–1100 μl, dependent on back pressure 

Materials in contact with mobile phase 

Pump headSST, gold, sapphire, ceramic
inlet valveSST, gold, sapphire, ruby, ceramic, PTFE 
Outlet valve SST, gold, sapphire, ruby
Adapter SST, gold
Purge valveSST, gold, PTFE, ceramic, PEEK
Damping unit Gold, SST 

Performance Specification Agilent 1200 Series Quaternary Pump G1311A

Hydraulic system Dual plunger in series pump with proprietary servo-controlled variable stroke drive, floating plungers and active inlet valve 
Setable flow range 0.001 – 10 ml/min, in 0.001 ml/min increments 
Flow range0.2 – 10.0 ml/min 
Flow precision £ 0.07% RSD, or £ 0.02 min SD whatever is greater, based on retention time at constant room temperature
Flow accuracy ± 1% or 10 μl/min whatever is greater

Operating range 0 – 40 MPa (0 – 400 bar, 0 – 5880 psi) up to 5 ml/min

Operating range 0 – 20 MPa (0 – 200 bar, 0 – 2950 psi) up to 10 ml/min 

Pressure pulsation< 2 % amplitude (typically < 1 %), at 1 ml/min isopropanol, at all pressures > 1 MPa (10 bar) 
Compressibility compensation User-selectable, based on mobile phase compressibility 
Recommended pH range 1.0 – 12.5, solvents with pH < 2.3 should not contain acids which attack stainless steel 
Gradient formation Low pressure quaternary mixing/gradient capability using proprietary high-speed proportioning valve Delay volume 800 – 1100 μl, dependent on back pressure 
Composition Range 0 – 95 % or 5 – 100 %, user selectable
Composition Precision < 0.2 % RSD, at 0.2 and 1 ml/min
Control and data evaluation Agilent control software (e.g. ChemStation, EZChrom, OL, etc.) 
CommunicationsController-area network (CAN), GPIB, RS-232C, APG Remote: ready, start, stop and shut-down signals, LAN optional 


HPLC Pump Quaternary pump
Agilent HPLC system Agilent 1200 series
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