This International Standard specifes a method for the determination of the fat crush resistance of corrugated fbreboard used in the manufacture of shipping containers.This International Standard is applicable to single-faced and single-wall (double-faced) corrugated fbreboard.This International Standard is not applicable to double-wall (double-double-faced) corrugated fbreboard and to microfute corrugated fbreboard, since the end-point of the test is not clearly defned or observable.