Abstract: A trace component dispensing system where a trace fluid in fluid is introduced into a carrier fluid by use of a controlling permeation member where the carrier fluid and trace fluid are continuously flowing and the trace fluid is transferred on at a selected permeation rate to the carrier fluid. In another aspect, tracer fluid dispenser capable of outputting a fixed rate of flow is utilized to input to a fluid in a fixed volume container for a predetermined period of time to establish a desired concentration of the trace fluid in the fixed volume container where the desired concentration is a function of the fixed rate of flow and the fixed volume container.

Abstract: A trace component dispensing system where a permeand in a container is exposed to an elongated permeation member in the container where the permeation member has a bore sized to control the rate of permeate flow. For low pressure application a tubing is inserted into the bore to pass carrier gas across the surface of the bore and to intermix with permeate. Fluids can be input to the container to block impurities from the permeate gas. The effective surface area can be controlled to control the rate of permeate flow.