Abstract: This invention relates to a method for detecting whether contaminants are on or have migrated into the body of a plastic reusable food or beverage container. The invention uses a sensor attached to the inside of the container which changes optical density when it is exposed to certain contaminants. The change in optical density is detected by illuminating the sensor with ultraviolet light and then measuring the effect that the sensor has on the ultraviolet light.

Abstract: An analyzer typically used in conjunction with a standard carbonated beverage container filling line that determines the concentration of a dissolved gas such as carbon dioxide of a beverage liquid being supplied to the filling line has the following components:a. a sealed cell having an entry and an exit for liquids and a pressure transducer for measuring the pressure and a temperature transducer for measuring the temperature of the contents of the cell;b. a first valve for diverting a portion of the liquid being supplied to the entry of the cell and a second valve sealing the exit of the cell to prevent the liquid from escaping;c. a third valve for venting pressure from the cell;d. an ultrasonic exciter attached to the cell that agitates the liquid in the cell and brings the liquid and the dissolved gas into equilibrium conditions;e.

Abstract: A method and system are described for preventing interaction between the valves and pump in a liquid blending system. The method and system select operating relationships between the valve period and pump period that avoids synchronous operation and thereby improves the blend accuracy.