Dosing pumps

High pressure dosing: metering liquids easily up to 650 bar
KNAUER pumps are designed for feeding liquids under high pressure. A selection of pump heads is available for customized chemical compatibility with a wide range of liquids. Different flow rate ranges and an optimized pump design enable excellent performance and high flexibility for demanding low, medium, and high pressure dosing tasks. Pump heads can be exchanged quickly to adapt easily to changing applications.

High accuracy dosing: combining pumps with mass flow controllers
Demanding metering applications for liquids with different viscosities or precise batch dosing tasks can be achieved by combining KNAUER pumps with mass flow controllers. Since KNAUER pumps support a wide variety of communication interfaces, their pumps can be easily integrated into pilot plants or process environments. KNAUER pumps can also be combined with mass flow controllers to enable batch dosing or metering tasks.
The online measurement of the density and the direct feedback of the actual mass flow guarantee feeding of the highest accuracy. Mass flow coupling enable precise dosing of liquids independent of their properties.

Dosing of aggressive liquids: tackling challenges with the right pump
Strong acids and bases are often required for different liquid applications. KNAUER offers pumps with a choice of different pump head materials which can be used for demanding dosing tasks. Furthermore the pump design allows an easy replacement of parts which come in contact with aggressive and corrosive chemicals.

Dosing highly viscous liquids: getting exquisite results with viscous media
One important property of liquids is their viscosity and many pumps will struggle with highly viscous media. When bottling honey, it is typically heated moderately to reduce its viscosity, a principle applicable also to many other highly viscous liquids. If an increase of the liquid temperature is not suitable, pumps with a high engine performance will be required. KNAUER pumps with their powerful motor drives are adequate for these demanding conditions.

High temperature dosing: handling temperatures up to 120 °C
Sometimes the supply of media or starting materials for a chemical reaction needs to be heated to properly meet the conditions of the process. This is where standard high pressure pumps can reach their limits. KNAUER dosing pumps withstand moderate liquid temperatures and can be equipped with thermally decoupled pump heads even for elevated temperatures.
It is also possible to equip the pump with a pump head heating device for temperature sensitive applications.

Low temperature & liquid gas dosing: metering below 0 °C
KNAUER pumps cover a wide range of different demands. Chemical compatibility and working temperatures are just two possible requirements. Pumping liquids at low temperatures may be required in flow chemistry or in various applications involving liquefied gases. The wetted parts of the KNAUER pumps are capable of working under these conditions. With an optional pump head cooling device these pumps are perfect for dosing or feeding of liquefied gases or cooled liquids

Azura P 2.1S Knauer Dosing Pump

Azura P 2.1S

Compact high pressure pump with 10 or 50 ml/min pumphead available in stainless steel, ceramic, titanium or Hastelloy-C. - Dual-piston pump with dual reciprocating piston technology for...

AZURA P4.1S Knauer Dosing Pump


AZURA P 4.1S dosing pump was developed for eluent delivery up to 400 bar and for flow rates up to 10 ml/min in HPLC and other applications where a compact easy-to-integrate pump is...

BlueShadow Pump 40P Knauer dosing pump

BlueShadow Pump 40P

The pump was designed to provide exceptionally precise and reliable solvent delivery for a wide range of HPLC applications in quality control and testing as well as research and method...

BlueShadow Pump 80P Knauer Dosing Pump

BlueShadow Pump 80P

The Preparative Pump 80P delivers stable and precise solvent flow for semi-preparative as well as preparative HPLC applications. By adding one or more additional pumps, binary, ternary or...