ASTM D3968Standard Test Method for Monitoring of Rotational Torque of Type IIIA Child-Resistant Closures
This test method covers the measurement of rotational torques of Type IIIA child-resistant closures as a means of monitoring normal functioning of the child-resistant package. Type III are snap-close, turn-to-align for release by pushing the cap lip off.
Before conducting ASTM D3968, it is important to read the entire specification. Standards can be obtained from appropriate standard authorities.