Scientific measuring and checking apparatus and instruments for the in-situ analysis of immiscible liquid mixtures contained in vats, containers, pipes and pipelines; measuring and monitoring apparatus and instruments for inlets and outlets of vats, containers, pipes and pipelines for the in-situ analysis of immiscible liquid mixtures; precision measuring apparatus for the in-situ analysis of immiscible liquid mixtures contained in vats, containers, pipes and pipelines; chemistry apparatus an...