# Dry chemical extinguishers · Internal examination · NFPA 10 (2010 ed.) — Fire extinguisher inspection, maintenance and hydrostatic test intervals by agent type

For Dry chemical extinguishers · Internal examination · NFPA 10 (2010 ed.), extinguishing agent / type is Dry chemical extinguishers; service obligation is Internal examination; interval is Every 6 years; authority is NFPA 10 (2010 ed.); section is NFPA 10(10), Sec. 7.3.1.2, recorded from its source on 2026-08-19.

- **Extinguishing agent / type:** Dry chemical extinguishers _(verified: appears in the quote below)_
- **Service obligation:** Internal examination _(our reading, not quoted from the source)_
- **Interval:** Every 6 years _(verified: appears in the quote below)_
- **Authority:** NFPA 10 (2010 ed.) _(our reading, not quoted from the source)_
- **Section:** NFPA 10(10), Sec. 7.3.1.2 _(verified: appears in the quote below)_

## What the source says

> Every 6 years, stored pressure fire extinguishers that require a 12-year hydrostatic test (e.g. dry chemical extinguishers) must be emptied and subjected to an internal examination by a trained technician in accordance with procedures detailed in the manufacturer’s service manual and NFPA 10(10), Sec. 7.3.1.2.

## Source

- https://www.health.state.mn.us/facilities/regulation/engineering/docs/lscfireext.pdf

Last verified: 2026-08-19. Review by: 2027-08-19.
Part of [Fire extinguisher inspection, maintenance and hydrostatic test intervals by agent type](https://referencesource.org/fire-extinguisher-inspection-testing-intervals-by-type/).