During the production of water by the fuel cells, some hydrogen remains in solution and must be removed before the water is used for cooking and drinking. The water dispenser (which is stowed in the Left Hand Forward Equipment Bay) can be fitted with 6-inch long cylindrical hydrogen gas separators, which serve to remove the unwanted gases. The separators are provided a specially designed bag and were stowed in locker A1 of the Command Module at launch. This bag was flown on the Apollo 11 Command Module during its historic mission. It was transferred to the Smithsonian in 1970.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.