What should be checked before using a partially discharged agent?

Checking whether a partially discharged agent has been examined and passed is essential for ensuring that it meets safety and operational standards. A visual inspection is crucial to confirm that the extinguisher is still functional even if it has been partially discharged. This inspection may involve checking for any visible damage, ensuring the proper amount of agent is left, and verifying that it has been maintained according to the relevant standards. If the extinguisher has been properly examined and is certified for use, it indicates that it is safe to rely on despite being partially discharged.

The other considerations, such as color, smell, or temperature, may be relevant in some contexts but are not definitive criteria for assessing whether the extinguisher is safe to use. The primary focus should be on proper inspection and certification, which ensures that the agent, even if not fully charged, can still be effective in an emergency situation.