A SAMPLING SYSTEM

摘要

In a sampling system, delivery and return flow pipes extend between a bulk supply and a sampling station. A needle communicates with the flow path at the sampling station and apparatus is provided for maintaining a depression at the sampling station. Pulsed pressure fluid applied to the delivery pipe propels slugs of a liquid to the sampling station. With a closed bottle located on the needle, the bottle is evacuated by the depression at the sampling station to allow sample to collect in the bottle.