High performance UHPLC pump with binary gradient

AZURA® P 8.1L UHPLC pump suitable for ultra-fast and high-resolution applications

The new AZURA® P 8.1L UHPLC pump offers a maximum delivery pressure of 124 MPa/1240 bar and a flow rate range up to 5 ml/min for ultra-fast and high-resolution applications.

The adaptive pulsation compensation of the pump is independent of flow rate, backpressure, and eluent type through real-time eluent compressibility monitoring and variable piston stroke. Together with the ultra-precise piston movement thanks to KNAUER’s proprietary advanced piston drive technology, this results in outstanding flow reproducibility at any working conditions. The pump also features a 2-channel internal degassing unit, a 2x2 channel solvent selection valve, and a low dwell-volume eluent mixer.

Developed with innovative technology and decades of continuous improvements the AZURA® P 8.1L UHPLC pump enters a new level of performance and durability. With a high level of in-house component production KNAUER achieves an industry-leading level of manufacturing precision. This results in unmatched piston seal life and system uptime.

Max. flow rate	5 ml/min
Flow rate range	0.001–5 ml/min
Flow rate increment	0.001 ml/min
Maximum delivery pressure [psi]	18000 psi
Maximum delivery pressure [MPa]	124 MPa
Maximum delivery pressure [bar]	1240 bar
Pump head materials	Stainless Steel
Liquid temperature range	4−60 °C (39.2−140 °F)
Gradient	High pressure gradient (binary)
Leak management	Yes
Wetted materials	GFP (graphite fiber reinforced PTFE), sapphire, ruby, stainless steel, Zirconium oxide, DLC (Diamond-like carbon), Vespel®
Pump features	Active pulsation compensation, RFID for automatic pump head detection, Integrated pressure sensor, Leak management, Piston seal wash, Purge valve (automatic)

Flow rate accuracy	± 0.25 %
Flow rate accuracy conditions	measured at 1 ml/min at 1200 bar with water
Flow rate precision	≤ 0.04 % RSD or 0.008 min SD
Flow rate precision conditions	whichever is greater
Gradient range	0–100 % in 0.1 % increments
Gradient accuracy	± 0.3 %
Gradient precision	≤ 0.1 % RSD or 0.01 min SD
Gradient minimum increment	0.1 %
Mixing volume	50 µl
Pump type	Analytical UHPLC pump
Degasser	Yes
Solvent selection valve	2 x 2 channels
Pulsation compensation	Active pulsation compensation
Active piston seal wash	Yes
Piston seal washing	Yes
System protection	Soft start, Pmin und Pmax are programmable
Pump Outlet thread	Female UNF 10-32 (coned)
Pump head inlet (standard)	UNF 1/4-28 Thread
Pump head outlet (standard)	UNF 10-32 Thread

Interfaces	LAN, Pin header connectors (Analog IN, Start In, Error IN)
Control	LAN, Analog and event control, Mobile Control
Analog outputs	8 event outputs (TTL, OC, Relais) , 5 V and 24 V constant

Power supply	100–240 V; 50–60 Hz; Maximum power consumption 310 Watt
Dimensions	361 mm x 208.2 mm x 523 mm (W × H × D)
Weight	26.7 kg
Leak sensor	Yes
Ambient conditions	4–40 °C (39.2–104 °F) Air humidity below 90 %, non-condensing

Certified Quality

KNAUER is known for the quality of its products and has been certified several times. We produce high-tech laboratory instruments for research, routine analysis and production.
See all Quality certificates

In addition, we have extended documentation about all our products, including CE Declarations of Conformity.
See all CE Declarations of conformity

Innovation and quality - since 1962. Made in Germany.