Abstract: A method and a device for the treatment of a gas to be analyzed in a gas mixture, including a separation of components from the gas mixture, where the presence of said components is undesirable for performing the analysis. An aerosol filter is employed for the separation of undesired components. A reagent material is admixed to the gas stream, wherein the reagent material forms an aerosol together with the undesired components of the gas mixture. The gas stream passes a reaction path (4) after the entering of the reagent materials. The reaction distance (4) provides a dwelling time for the generation of aerosols in the mixture of gases and the reagent material. The aerosol filter (5) is disposed downstream of the reaction distance (4), which separates the aerosols from the gas stream.

Abstract: A single gas analyzer is used for analyzing the concentration of two gaseous components such as hydrogen and chlorine in a blend by responding to the chlorine content in the gas blend there being a UV-type reactor for the formation of hydrochloric acid and the operation is such that the gas to be analyzed alternates between a path in which the reaction has taken place and one in which such a reaction has not taken place, for directly measuring the concentration of the gas with a higher concentration and indirectly the concentration of the gas with the lower concentration by determining the depletion the reaction has caused in the higher concentration gas.

Abstract: In a method for determining the inorganic carbon content of aqueous liquids, the liquid sample together with a carbon dioxide free carrier gas is injected vertically from top to bottom in to a heated reaction chamber. The reaction chamber is filled with liquid phosphoric acid. The carbon dioxide generated in the reaction of the sample with the phosphoric acid is fed to a CO.sub.2 analyser. The reaction chamber is preferably heated to a temperature of approximately 140.degree. C.