HPLC Syringe Pump

Advanced High Pressure Syringe Pump With:

Built-in pressure transducer

Pulse free operation without pressure dampener

No vibration or noise

Fast refill time

Accurate flow down to 1.0 µl/min

Zero dead volume

Two pumps form a gradient high pressure mixing system

No de-gasser needed



  • Power requirements  24 VDC
  • Current  requirements up to 1.5 A
  • Dimensions 7.6 cm x 17 cm x 12.7 cm   (3.0”w x 6.7”h x 5.0”d)
  • Weight 1.3 kg (2.9 lb)
  • Flow rate range 0.001 to 4 ml/min
  • Speed accuracy 1% of full-scale
  • Linearity full range 0.001-4.0 mL/min
  • Pressure 4000 psi (285 bar) continuous
  • Operating temperature 0 to 40 C, non-condensing
  • Tube connections
  • Inlet: thread 10-32 UNF compression type
  • Outlet: thread 10-32 UNf compression type
  • Communication:  USB virtual serial port

Pump Description

Alltesta syringe pump was designed to produce a steady high pressure pulsation-free flow. For years, solvent delivery pumps in HPLC was dominated by complex, expensive, and none-reliable reciprocating multi plunger devices. With proliferation of small-bore columns, the needs for continuous unlimited flow is diminished. Now, a small syringe based pump can provide sufficient amounts of mobile phase for almost any narrow and small bore applications. Since syringe flow is inherently pulsation free, there is no need for bulky dampeners, mixers, and precision check valve arrangements. Refill time is reduced for a less than a minute prior to each injection. Two pumps when connected provide high pressure mixing precision gradient flow with zero delay volume mixing at high pressure.

The pump features communications capability for integration with other instrumentation through the USB virtual serial port.


Available custom options

Metal-free version of the pump includes no metal contact pump head and can be operated up to 4000 psi.
Cloud based software www.HPLC.cloud for pump operation is available via StreamLC