Cooperage test for bung-type wooden barrels.

(a)Number of samples. One barrel is required for each different packaging.#

(b)Method of testing. Remove all hoops above the bilge of an empty barrel at least two days old.#

(c)Criteria for passing the test. A packaging passes the cooperage test only if the diameter of the cross-section of the upper part of the barrel does not increase by more than 10 percent.#