Which of the following statements about OLAW's guidance on the use of carbon dioxide as a euthanasia agent is false?

The statement regarding carbon dioxide that is considered false is that it must be supplied only from compressed gas cylinders. While it is indeed common practice to use compressed gas cylinders for delivering carbon dioxide, OLAW also recognizes that other delivery methods can be appropriate as long as they meet specific guidelines for humane euthanasia. For instance, carbon dioxide can be generated from other sources, such as dry ice (solid carbon dioxide), as long as the methods ensure the gas concentration increases at a rate that minimizes distress and pain to the animals.

The emphasis within OLAW's guidance is on the humane aspects of euthanasia rather than the rigid requirement of using only one type of carbon dioxide source. Other practices that promote animal welfare, such as pre-filling chambers and verifying death before disposal, align with OLAW's goals of ethical treatment in research settings. Reporting unintended recoveries is also critical for compliance and improving euthanasia protocols, but the stipulation about the exclusive use of compressed gas cylinders doesn't reflect the nuanced approach OLAW advocates.