Apollo Command Module LiOH Filter Assembly, 7.25″ x 7.25″ x 5.25″, bearing an affixed Airesearch label on the side, reading: “Absorber Element CO2, Part 813[…]-1, Serial 29-[…], Order NAS-9-150, NASA 004000029378, Ref Spec ME901-0218-0051." The side is stenciled with red-and-yellow text: “Ground Test Only.” This lithium hydroxide canister was designed to maintain a pure-oxygen environment within the Apollo spacecraft; utilized as part of the Environmental Control Unit (ECU), this assembly used LiOH to absorb carbon dioxide and a filter to trap particulate in the circulating air. A square CO2 scrubber cartridge like this one was the focal point of a key part of the Apollo 13 drama, using duct tape and spare materials to get it operating in the Lunar Module.
We use cookies on this site to improve your experience. By using this site, you accept our use of cookies. To learn more, please see our Privacy Policy.