Abstract: A completely self-contained portable apparatus that is easily carried scrubs contamination from a sealed container and charges the scrubbed container with inert gas. A housing for the apparatus carries a reservoir for the gas, a service line for supplying gas from the reservoir to the container, valves, and pneumatic logic for controlling the valves. One of the valves selectively supplies gas from the reservoir to the line or vents the line in response to a pneumatic signal derived by the logic means which is powered by gas in the reservoir. The logic means sequentially derives a preselected number of the pneumatic signals so that contamination in the container is scrubbed by the sequential flow of the gas into and out of the container through the line.