A method and system for processing a Web service request in a distributed computing environment. The head comprises a body and an outside wall, the body having at least one injection nozzle mounted therein, the nozzle having an inlet diameter equal to d and presenting an axis, the body also having a tube. There is a throat member having a second predetermined shape and connected to a bottom portion of the main body member for insertion into such container to be filled. A controller within the dispenser automatically calibrates the dispense parameters based on the chemical product data.