Evotec Ag

Evotec Oia Ag

Oliver Wendt

Hartwig Preckel

Axel Ehlert

In a method for cleaning a liquid delivery device such as a dispensing or pipetting device, the liquid chamber can be flushed in a cleaning step. To remove gas bubbles which might exist in the liquid chamber, for example, the liquid in the liquid chamber is vibrated during the cleaning step.

Dispensing method

In a method for monitoring the operability of a liquid delivery device such as a dispenser (), a response signal of a liquid-transformer system consisting of a transformer () and a chamber () containing a liquid is compared with a reference value. Preferably, the reference value is determined when the liquid-transformer system is operative, i.e., non-disturbed. The response signal differs from the reference value if there are air bubbles in the chamber (), for example. By comparing the response signal with the reference value, a correction step such as a cleaning cycle can be performed when a limit value is exceeded or fallen short of.

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Hamburg, Germany

Oliver Wendt