# 8, 8AL — How often hazmat cylinders, cargo tanks, IBCs and portable tanks must be retested For 8, 8AL, test or inspection is Periodic requalification; interval is 10 or 20; regulation section is 49 CFR § 180.209, recorded from its source on 2026-08-06. - **Container specification:** 8, 8AL _(verified: appears in the quote below)_ - **Test or inspection:** Periodic requalification _(our reading, not quoted from the source)_ - **Interval:** 10 or 20 _(verified: appears in the quote below)_ - **Regulation section:** 49 CFR § 180.209 _(verified: appears in the quote below)_ ## What the source says > 8, 8AL | | 10 or 20 ( see § 180.209(i) ). ## Source - https://www.law.cornell.edu/cfr/text/49/180.209 Last verified: 2026-08-06. Review by: 2027-08-06. Part of [How often hazmat cylinders, cargo tanks, IBCs and portable tanks must be retested](https://referencesource.org/hazmat-container-retest-intervals/).