# metal, rigid plastic, and composite IBCs — How often hazmat cylinders, cargo tanks, IBCs and portable tanks must be retested For metal, rigid plastic, and composite IBCs, test or inspection is leakproofness test; interval is prior to its first use in transportation and every 2.5 years thereafter; condition or service qualifier is intended to contain solids that are loaded or discharged under pressure or intended to contain liquids; regulation section is 49 CFR § 180.352, recorded from its source on 2026-08-10. - **Container specification:** metal, rigid plastic, and composite IBCs _(verified: appears in the quote below)_ - **Test or inspection:** leakproofness test _(our reading, not quoted from the source)_ - **Interval:** prior to its first use in transportation and every 2.5 years thereafter _(verified: appears in the quote below)_ - **Condition or service qualifier:** intended to contain solids that are loaded or discharged under pressure or intended to contain liquids _(verified: appears in the quote below)_ - **Regulation section:** 49 CFR § 180.352 _(verified: appears in the quote below)_ ## What the source says > Test and inspections for metal, rigid plastic, and composite IBCs. Each IBC is subject to the following test and inspections: (1) Each IBC intended to contain solids that are loaded or discharged under pressure or intended to contain liquids must be tested in accordance with the leakproofness test prescribed in § 178.813 of this subchapter prior to its first use in transportation and every 2.5 years thereafter, starting from the date of manufacture or the date of a repair conforming to paragraph (d)(1) of this section. ## Source - https://www.law.cornell.edu/cfr/text/49/180.352 Last verified: 2026-08-10. Review by: 2027-08-10. Part of [How often hazmat cylinders, cargo tanks, IBCs and portable tanks must be retested](https://referencesource.org/hazmat-container-retest-intervals/).