Random access rotary valve

摘要

A rotary valve comprising a stator (111) and a rotor (112), wherein the stator includes a plurality ofconnection ports (131a-137a), wherein the rotor includes interconnection paths (140-144) for selectively interconnecting said ports by means of rotation of the rotor relative to the stator, and wherein a component in the form of a pH sensor (52) is attached to the stator and is selectively interconnected to respective ports via respective interconnection paths.