• Quaternary analytical HPLC pump offers wide range of flow rates (0.001-10 ml/min)
  • Completely metal-free design
  • Integrated degasser module
  • Pressure sensor with integrated and replaceable AZURA inline filter
  • Solvent selection valves for two solvents per channel

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The KNAUER AZURA pump P 6.1L uses technology to overcome the challenges of pumping LC solvents at high pressure and high flow rates. This pump is designed to fulfill the needs for low pressure mixing tasks.

This pump has a complete metal free design for biocompatible applications or ion chromatography.The pump can deliver flow in the range of 0.001 – 10 mL/min at pressures up to 400 bar. The AZURA quaternary pump contains one high pressure pump (400 bar) and an integrated LPG mixing block with a 4 × 2-channel inlet solvent selection valve and the new developed AZURA mixer, a low-volume mixing device.

The integrated degasser and AZURA inline filter are completing the analytical AZURA HPLC pump and turn this pump into a working horse in the lab.

Additional Features:

  • AZURA mixer for highest mixing efficiency with lowest delay volumes
  • Flexible 1/16“ capillaries
  • Pump version for biocompatible applications with a metal free design available
  • Integrated compressibility compensation
  • Integrated leak management
  • Constant pressure operation mode
Pump typequaternary HPLC pump with degasser
Solvent delivery
Pump head 10 ml/min
Pulsation compensation active pressure and pulsation compensation
Pump head materials ceramic
Maximum delivery pressure 40 MPa (400 bar, 5800 psi)
Flow rate range 0.001 - 10 ml/min
0.02 - 10 ml/min (recommended)
Flow rate increment 0.001 ml/min
Flow rate accuracy ± 1%, measured at 5 - 80% of flow range using ethanol
Flow rate precision < 0.1 % RSD based on retention time at constant room temperature
Pulsation < 2 % amplitude (typically < 1.3 %) or 1 MPa (10 bar, 147 psi)
Gradient formation Low pressure quaternary mixing
Gradient range 0-100%
1-99% (recommended)
LPG: minimum increment 0.1%
LPG: gradient accuracy ± 0.3 % at 1 ml/min, 150 bar ethanol/caffeine tracer)
± 2 % (1 - 99 %, measured at 5 - 50 % of the flow range, water/caffeine tracer)
LPG: gradient precision < 0.1% RSD at 1 ml/min, 0.5% RSD overall, based on retention time at constant room temperature
Mixing volume 250 μl
Delay volume 350 μl
Piston seal washing standard
System protection soft start, Pmin and Pmax are programmable
Wetted materials graphite fiber reinforced PTFE, FKM, PEEK, sapphire, aluminium oxide (Al2O3), zirconium oxide (ZrO2)
Degasser module
Degasser channels 4 channels, Teflon® AF
Degasser maximum flow rate 10 ml/min
Degassing method gas permeation through Teflon® AF amorphous fluoropolymer membrane
Degassing efficiency < 0.5 ppm dissolved O2 at 1 ml/min
Degassing chamber volume 480 µl volume per channel
Solvent applicability universal, with the exception of hydrochloric acid and halogenated hydrocarbons - in particular hexafluoroisopropanol (HFIP)
System protection soft start, Pmin and Pmax are programmable
Wetted materials PEEK, Tefzel®, Teflon® AF
Vacuum chamber polypropylene and stainless steel
Vacuum pump low hysteresis behavior
Control LAN; analog and event controlled
Analog inputs 0-10 V
Analog control input flow rate
Technical parameters
Ambient conditions temperature range: 10-40°C; 50-104°F
air humidity: below 90 % humidity (non condensing)
Leak sensor yes
Power supply voltage range: 100 - 240 V, 50 - 60 Hz
Dimensions 361 x 208.2 x 523 mm (W x H x D)
Weight 12.7 kg
Special features automatic adaption of LPG cycle time
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