A container system for high purity fluids includes an outer container having a mouth and a coupling member for insertion into the mouth. The coupling member defines a first fluid passage and a second fluid passage. The first fluid passage terminates within the outer container at a first location while the second fluid passage terminates within the outer container at a second location. The second fluid passage comprises at least one fluid channel circumferentially extending along the first fluid passage so that high purity fluids may be drawn out of the outer container through the first fluid passage and filled into the outer container through the second fluid passage.