The SP28 is a programmable, automatic air displacement pipette pump independently developed by Keyto for use with disposable tips to achieve precise dosing aspiration and dispense. This pipette allows for automatic tip pick-up and ejection, tip presence detection and liquid level detection, etc. The SP28 pipette pump also offers extremely high dispense precision and accuracy, with a service life of over 1 million cycles without compromising precision and accuracy.
Maximum displacement volume( μL)
Liquid volume per step (μL/step)
Operating pressure (MPa)
Drive communication protocol
Disposable tip volume
Compatible with T-series tips(Customized on request)
Optional standard length：12mm\40mm\65mm
(Customized on request)
Note: Please kindly reach out to our sales team for design and specification final clarification and confirmation.
1.8° hybrid two-phase step motor with long-life and high-performance.
Various volumes available, nominal displacement: 100μL~1000μL.
Extremely high and stable dosing aspiration and dispense accuracy over the life cycle of the pipette pump.
Unique piston machining technology, rigorous inspection procedures and reliable sealing solutions guarantee a life expectancy of more than one million cycles without maintenance.
Good chemical resistance of the pipette pump components:
(1) Pump head material: aluminium alloy;
(2) Piston material: stainless steel.
End position optical detection. The optical sensor detects whether the pump is at the initial position of aspiration.
Automatic tip presence detection and tip ejection.
Automatic pneumatic liquid level detection and tip clogged detection.