Abstract: This invention relates to a method and system for establishing and maintaining a precise concentration of dissolved gas in a liquid. More particularly, the invention relates to a method and system of establishing and maintaining a precise concentration of dissolved gas in a liquid by utilizing a gas blend comprising a sufficient concentration of the desired gas so as to be in equilibrium with the desired concentration of the gas to be dissolved in the liquid, i.e., a “matched gas blend”, to prepare a liquid admixture comprising the desired concentration of the gas. In this manner, the method and system of the present invention are able to produce liquid admixtures comprising precise concentrations of dissolved gas suitable for use in applications with tight specifications, and further, are capable of delivering the liquid admixture so produced to a point of use with substantially no loss of dissolved gas.

Abstract: A system for increasing the quantity of a gas, e.g., ozone, dissolved in a liquid, e.g., ultrapure deionized water, is provided. Generally, the system provided by the present invention includes a pressurized vessel and an outlet coupled to the pressurized vessel adapted to dispense a stream of the admixture including the liquid and the dissolved gas under sufficiently gentle conditions such that the dispensed admixture comprises an increased quantity of dissolved gas relative to admixture produced and dispensed by conventional methods. Thus, the system of the present invention is able to provide, e.g., ozonated water, continuously, efficiently and without cooling, and thus provides a simple, cost efficient system capable of producing high concentration ozonated water.