ASTM D3472-97(2007)
Standard Test Method for Reverse-Ratchet Torque of Type IA Child-Resistant Closures

Standard No.

ASTM D3472-97(2007)

Release Date

1997

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D3472-97(2007)

Scope

These torque measurements are of value because the reverse-ratchet torque is a torque applied to the closure in the removal direction of the closure. For Type IA closures, it is essential that this torque be significantly lower than some defined level at which the closure might unscrew.

This test may be used to establish performance specification for this attribute.

1.1 This test method covers the measurement of the torque developed when Type IA child-resistant closures are rotated in the counter-clockwise direction. Type IA closures are reclosable continuous threaded closures that use a random push down while turning; no orientation of the push down force is necessary.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D3472-97(2007) Referenced Document

• ASTM D3198 Standard Test Method for Application and Removal Torque of Threaded or Lug-Style Closures
• ASTM D3474 Standard Practice for Calibration and Use of Torque Meters Used in Packaging Applications*， 2018-04-15 Update
• ASTM D3475 Standard Classification of Child-Resistant Packages*， 2024-04-19 Update
• ASTM D3810 Standard Test Method for Minimum Application Torque of Type IA Child-Resistant Closures
• ASTM E105 Standard Practice for Probability Sampling Of Materials*， 2024-04-19 Update
• ASTM E122 Standard Practice for Calculating Sample Size to Estimate, With a Specified Tolerable Error, the Average for Characteristic of a Lot or Process*， 2000-10-10 Update

ASTM D3472-97(2007) history

• 1997 ASTM D3472-97(2007) Standard Test Method for Reverse-Ratchet Torque of Type IA Child-Resistant Closures
• 1997 ASTM D3472-97(2002) Standard Test Method for Reverse-Ratchet Torque of Type IA Child-Resistant Closures
• 1997 ASTM D3472-97 Standard Test Method for Reverse-Ratchet Torque of Type IA Child-Resistant Closures