Handling minute volumes of liquids is a hugely important step for a large number of processes in laboratory automation. With pressure-controlled dosing systems, volumes from 1 μl can be dispensed precisely and reliably with a coefficient of variation of < 1% (depending on liquid volume and ambient conditions). The speed of the liquid can be uniquely controlled via the pressure, and independently of the dispensing, aspirating, and pipetting functions. Users can precisely adjust the system for optimal flow and precision, so a clean drop break-off can be achieved for reproducible accuracy. Solutions with sensitive liquids such as suspensions can be handled more gently using lower pressures. In addition, there are many different options for monitoring the process.
Pressure-controlled dosing systems are open and flexible. Many parameters can be changed and individually adjusted, enabling a wide range of different liquids to be precisely dispensed. The systems can also be individually extended or adapted to specific needs.
Since many laboratory processes require liquids to be handled precisely, automation leads to significant productivity gains and improved process reproducibility. One of the biggest benefits of pressure-controlled dosing systems is their scalability. For example, individual dispense heads can be combined by mounting them on a rail with a freely selectable grid. All dispense heads can be controlled independently to dispense different liquids simultaneously or to set different volumes.
To increase productivity, the dispense head can be easily integrated into a planar surface gantry. This subsystem enables kinematic movements and liquid handling in a compact workspace, for example for preparing samples or adding liquids to microwell plates. Pressure-controlled dosing systems enable a high throughput. The high flow rates and constant flow pressure optimise performance compared to other systems.
Festo offers a comprehensive portfolio of products for pressure-controlled dosing systems that can be easily scaled and combined. Talk to the LifeTech experts at Festo about the solutions that best meet your individual requirements in terms of precision, flexibility, or throughput.