Alltesta™ HPLC Syringe Pump

SIELC’s Alltesta™ Ultra High Pressure Mini Syringe Pump

The Alltesta compact ultra high-pressure Mini Syringe Pump is designed to produce a steady, high pressure, pulsation-free flow. For years, reciprocating, multi-plunger devices have dominated the solvent delivery pump sector in HPLC. These pumps, however, are complex, expensive, and lack reliability. Furthermore, with the proliferation of small-bore columns, the need for continuous, unlimited flow has diminished. Now, a miniature syringe-based pump can provide sufficient amounts of mobile phase for nearly any narrow- and small-bore application. Since syringe-flow is inherently pulsation free, there is no need for bulky dampeners, mixers, and precision check valve arrangements. The proprietary design of SIELC’s mini HPLC pump takes advantage of this pulsation-free flow, and also removes the need to degas the mobile phase.

This compact miniature syringe pump can refill prior to each injection in less than a minute, and can reach a flow rate of up to 4000 μL/min or down to 1 μL/min. This means that many injections can be completed in relatively quick succession.

When connected together to the Alltesta™ Power Tower, two pumps can provide a high-pressure, mixing, precision gradient flow with zero delay volume. All of these features and more are packed into this small syringe pump.

The mini pump also 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


The Mini Syringe Pump can be controlled remotely through the or directly via our custom OEM software or via Serial commands. The Mini Syringe Pump can only connect to the cloud through the Alltesta™ Power Tower. Every purchase of the Alltesta™ Power Tower includes a free subscription to

For our Direct control software options, please see below for links to our OEM software and drivers for Serial commands.


Windows 10, 32/64bit, 5.34 Mb (usb2serial FTDI FT230XQ-R driver included)

Windows 7, 32/64bit, 120.9Mb (usb2serial FTDI FT230XQ-R driver included, please restart your PC after installation)

Serial Communication Drivers:


For the list of serial commands, please contact us at



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 Alltesta™ Power Tower.

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