&quot; 2.1.3.6.4 An article may be excluded from Class 1 when three unpackaged articles, each individually functioned by its own means of initiation or ignition or external means to function in the designed mode, meet the following test criteria:
&quot; 2.1.3.6.4 An article may be excluded from Class 1 when three unpackaged articles, each individually functioned by its own means of initiation or ignition or external means to function in the designed mode, meet the following test criteria: