During the extended periods of the lunar missions, clean drinking water for the astronauts was of paramount importance. This was maintained by chlorinating and buffering the water by insertion of small ampules into the water units. These ampules were stored in this specialized cloth container along with components of the Chlorination syringe used to inject chemicals into the water unit during the mission.
This container was flown on Apollo 11 Command Module and was returned with unused ampules following the mission. It was transferred from NASA to the Smithsonian along with the rest of the contents of the Command Module in 1970.
Transferred from the NASA - Johnson Space Center