Innovative Motion Technologies for Next-Gen Electronic Pipettes

A pipette is a laboratory tool used in chemistry and biology to aspirate and dispense measured volumes of liquid. In molecular biology and analytical chemistry, electronic pipettes ensure accurate and repeatable delivery of samples and reagents while reducing the risk of repetitive-strain injury. Whether designing a single or multi-channel electronic pipette, size, weight, and ergonomics are critical factors for design engineers to consider. The right design enables lab technicians to perform their tasks with precision throughout the day without suffering fatigue.

The motion solution drives the aspiration and dispensing of the sample or reagent, with several technologies available for consideration. Let’s explore the options and their advantages:

•	Can Stack Linear Actuators. This technology enables direct linear motion, creating a streamlined design as the motion solution aligns with the dispensing axis. A range of lead screw pitches are available to tailor the resolution to design requirements. Coil options ensure that the available battery voltage provides the necessary power with minimal current draw.
•	DC Coreless Motors. The low inertia of DC coreless motors provides high acceleration and deceleration, increasing the throughput of the device. Coupling with a gearhead increases torque output, making it ideal for multi-channel device designs. The coreless design also reduces current draw, enabling longer battery life and more time between charges.
•	Disc Magnet Step Motors. This unique stepper technology delivers small diameter designs while providing high mechanical and electrical accuracy. The disc magnet enables higher speed capability, offering a broader range of fluid handling capabilities for the pipette.

Connect with Portescap at the start of your new device development to review the ideal motion solution for your pipette design. Our experts will help you select the best technology to enhance performance and efficiency.