Compact pump with pressure sensor and 10 ml/min ceramic pump head

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Article No.: APG20EB
Articlename: AZURA P 4.1S

Compact pump with pressure sensor and 10 ml/min ceramic pump head

For HPLC and dosing applications

With its small footprint, the compact dual piston pump AZURA P4.1S can be used for a wide range of laboratory tasks. A pressure rating of up to 400 bar and chemical resistance to a wide range of eluents make it the perfect choice for LC and dosing applications. Pump heads with maximum flow rates of 10 and 50 ml/min are available.


Moreover, its exchangeable pump head allows adaptation of the pump for delivery of aggressive media and bioinert applications. The pump head can be heated or cooled with optional accessories.


Technical Data

General information

Max. flow rate 10 ml/min
Flow rate range 0.001−10 ml/min
Flow rate increment 0.001
Pressure range
Maximum delivery pressure [psi] 5080 psi
Maximum delivery pressure [MPa] 35 MPa
Maximum delivery pressure [bar] 350 bar
Pump head materials Ceramic
Maximum viscosity 100 cp
Liquid temperature range 4−60 °C (39.2−140 °F)
Gradient Isocratic
Leak management No
Wetted materials GFP (graphite fiber reinforced PTFE), Titanium, ruby, sapphire, ceramic, FKM
Pump features Piston seal wash, Purge valve (manual), Standalone control and programming, Integrated pressure sensor
Note Pressure sensor membrane made of stainless steel; limited wetting in fluidic path

Detailed information

Best working conditions 0.1−8.0 ml/min
Continuous working conditions 0.1−4.0 ml/min
Flow rate accuracy ±2%
Flow rate accuracy conditions 5 - 50% of flow range using ethanol/water 10:90
Flow rate precision ≤ 0.5 % RSD
Flow rate precision conditions measured at 1 ml/min using ethanol/water 10:90
Pump type Ultra-compact high pressure pump
Pulsation compensation No
Active piston seal wash No
Piston seal washing Yes
System protection
  • Pmin and Pmax adjustable
  • Imin and Imax adjustable
Pump Outlet thread Female UNF 10-32 (coned)
Pump head inlet (standard) 1/4"-28 UNF (flat bottom)
Pump head outlet (standard) 10−32 UNF (coned)


Interfaces display
Control RS-232; analog; button on device
Analog inputs 0−10V


Power supply 100−240 V; 50−60 Hz
Dimensions 121 x 129 x 220 mm
Weight 2.3 kg
Leak sensor No
Ambient conditions temperature range: 10–40 °C; 50–104 °F
air humidity: below 90 % humidity (non condensing)

Documents and more information

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 for 59 years.
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.

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Technical data or prices are subject to change without notice. Prices may vary by country and do not include taxes, customs duties or delivery.
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