An automated liquid level sensing system for use in an automated, continuous, and random access analytical system is disclosed. A pipette probe is positioned above, and lowered into, a liquid sample container which contains the liquid to be detected. The probe is energized by a near radio-frequency (RF)...http://www.google.es/patents/US5627522?utm_source=gb-gplus-sharePatente US5627522 - Automated liquid level sensing system
