Do not use a damaged ExtendAir CO2 adsorbent cartridge!

There are 3 important things to examine before using any ExtendAir cartridge:

1. Container packaging
2. Foil packaging
3. The cartridge itself

scuba diving equipment rebreather container damage
Each ExtendAir cartridge comes sealed in its own protective container. If the container is damaged, do not use that cartridge .
Scuba diver rebreather foil damage
The next level of packaging inside the container is a specially-sealed foil pouch. This bag controls the moisture content of the adsorbent cartridge and also prevents CO2 from reacting. If the bag is damaged in any way, do not use that cartridge.
scuba diving equipment rebreather cartridge damage
Finally, examine the cartridge for visible damage. Your training course will teach you how to properly inspect it.

This is an example of a damaged cartridge that should not be used.