1.1本试验方法涵盖了IA型儿童防护罩逆时针旋转时产生的扭矩测量。IA型闭合器是可重新闭合的连续螺纹闭合器，在转动时使用随机下推；无需确定下压力的方向。 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 这些扭矩测量值很有价值，因为反向棘轮扭矩是施加在封盖拆卸方向上的扭矩。 对于IA型闭合器，该扭矩必须显著低于闭合器可能松开的某个定义水平。 该测试可用于建立该属性的性能规范。

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. ====== Significance And Use ====== 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.