HPLC Syringe Pump

SIELC’s Alltesta™ Advanced High Pressure Syringe Pump

Alltesta syringe pump was designed to produce a steady high pressure pulsation-free flow. For years, solvent delivery pumps in HPLC have been dominated by complex, expensive, and non-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. The mobile phase degassing is also not required.

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.

The Pump Comes With

> Built in pressure transducer
> Pulse free operation without pressure dampener
> No vibration or noise
> Fast refill time
> Accurate flow down to 1.0µL/min
> Zero dead volume
> Two pumps form a gradient high pressure mixing system
> No degasser needed


Power Requirements 24 VDC
Current Requirements Up to 1.5 A
Dimensions 6 cm x 17 cm x 12 cm (2.5 x 6.7 x 4.5 inch)
Weight 2.9 lb
Flow Rate Range 0.001 to 4 mL/min
Speed Accuracy 1% of full-scale
Linearity Full Range 0.001 to 4.0 mL/min
Pressure 4000 psi (285 bar) continuous
Operating Temperature 0 to 40° C, non-condensing
Inlet Thread 10-32 UNF compression type
Outlet Thread 10-32 UNF compression type
Communication 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 for pump operation is available via StreamLC 

FOR ORDERS & QUOTES please email us at sales@sielc.com OR give us a call at +1 (847) 229-2629