PROCEDE ET DISPOSITIF POUR SIGNALER LES IMPURETES

摘要

A method for continuous testing of a liquid to determine the presence of small amounts of a lower boiling point material therein. The liquid is heated to at least the boiling point of the lower boiling material. The velocity of a stream of said liquid without the lower boiling point material is determined. If the lower boiling point material is present in the liquid, the velocity of the stream increases greatly and is a measure of the amount of the lower boiling point material. Apparatus is provided for carrying out the method.