Which statement about respirator cartridges is true?

Which statement about respirator cartridges is true?

• A. They expire after one year.
• B. They expire after ten years.
• C. They expire after five years.
• D. They never expire.

Answer: (C)

Respirator cartridges have a limited usable life because the filtering media and seals age, and their effectiveness can decline over time. For unused cartridges stored in their original packaging under normal conditions, manufacturers commonly set a five-year shelf life from the date of manufacture. After that date, performance can no longer be guaranteed, so the cartridge is considered expired. When in use, the actual service life depends on exposure, contaminant, humidity, temperature, and airflow, but the question focuses on shelf life, which is typically five years. A year or ten years aren’t the standard guaranteed lifespans, and saying they never expire ignores the effects of aging on the materials.

Respirator cartridges have a limited usable life because the filtering media and seals age, and their effectiveness can decline over time. For unused cartridges stored in their original packaging under normal conditions, manufacturers commonly set a five-year shelf life from the date of manufacture. After that date, performance can no longer be guaranteed, so the cartridge is considered expired. When in use, the actual service life depends on exposure, contaminant, humidity, temperature, and airflow, but the question focuses on shelf life, which is typically five years. A year or ten years aren’t the standard guaranteed lifespans, and saying they never expire ignores the effects of aging on the materials.