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Pumps for Diagnostics Applications


Lee pumps are engineered to provide maximum reliability and precision fluid control while reducing size and weight. Each pump is customizable and 100% tested to ensure reliable, consistent, long-term performance. With our solutions, system designers are empowered to improve throughput and bring innovative, cutting-edge technology to a variety of diagnostics applications.

Our miniature, silent, lightweight, piezoelectric disc pumps generate accurate pneumatic pressure and vacuum, enabling precise, ultra-smooth, high speed gas and liquid flow control. These pulsation-free micropumps are ideal for providing pressure-driven flow using the air over liquid method as well as for pipetting, aspirating, dispensing, droplet generation, and numerous other microfluidic applications.

Our highly reliable fixed and variable volume dispense pumps are ideal for positive fluid displacement applications in diagnostics, including reagent dispensing, aliquoting, probe washing, and sample preparation. Their ultra-fine resolution enables high precision volumetric aspirating and dispensing with exceptional accuracy. These pumps are maintenance-free and have an extensive life, so you can minimize downtime and position the pump where the system’s fluidics dictate, regardless of accessibility.


With the recent acquisition of TTP Ventus, we are pleased to add piezoelectric disc pumps to our portfolio of miniature, precision pumps. These ultrasonic, pneumatic micropumps generate pressure or vacuum in a small, silent, vibration-free form factor, and are available with or without integrated electronics for added simplicity. Designed for highly accurate, ultra-smooth, gas and liquid flow control, our disc pumps deliver unrivalled pneumatic performance and enable innovation wherever precision control of small volumes is critical. Available in five different product series, these innovative pumps can achieve flow rates up to 2 LPM and pressures spanning from -400 to +600 mbar.

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Fixed Volume Dispense Pumps

Fixed volume dispense pumps are solenoid-driven, chemically inert positive displacement pumps which provide accurate and repeatable dispense volumes ranging from 10 to 175 µL in a small, lightweight package. Lee fixed volume pumps require a simple electrical signal for operation – the pumps aspirate fluid when energized and dispense fluid when de-energized. Integrated check valves, together with our unique housing design and diaphragm seal interface, prevent siphoning when the dispense point is positioned above the fluid reservoir.

Variable Volume Dispense Pumps

Variable volume dispense pumps are stepper motor-driven pumps providing full dispense volumes ranging from 50 to 3000 µL. Lee variable volume pumps use a unique drivetrain design to aspirate a volume of fluid accurately and then dispense that fluid volume out in smaller increments. These pumps are available in a single seal or dual seal configuration for improved sealing performance when flowing aggressive fluids. Each pump is equipped with a home sensor to establish the end of stroke position. In some models, an optical motor encoder is included for applications requiring feedback on piston movement.

Support & Resources

Support & Resources from a Team that Speaks Your Language

Partner with The Lee Company and get much more than just a supplier of top-quality fluid control products. Our reliable technical support team is available every step of the way to help you find solutions, maximize productivity, and drive efficiency across your operations. Check out these diagnostic resources to learn more.