CO₂ Scrubber

The CO₂ Scrubber is a item in Burial at Sea - Episode 2. It was used to provide oxygen to curtain Bathyspheres in Rapture.

Burial at Sea - Episode 2
The CO₂ Scrubber was required to fic the Lutece Device in order for Elizabeth to get the Lutece Particle from Columbia. Elizabeth wil find the CO₂ Scrubber on the 1956 Stingray in the Service Bay, but it is elevated.

See aslo
Carbon dioxide scrubber on Wikipedia