1.1本试验方法包括通过在两种规定条件下测量棉纤维塞的气流阻力，测定松散随机棉纤维的线密度和成熟度指数。 注1:关于测定棉纤维线密度和成熟度特性的其他方法，请参阅试验方法D1442、D1448、D1769、D2480、D3817、英国标准BS 2016、BS 3085和ISO 2403。 1.2本标准无意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。

1.1 This test method covers the determination of linear density and maturity index of loose randomized cotton fibers by measuring the resistance to air flow of a plug of cotton fibers under two prescribed conditions. Note 1-For other methods for determining linear density and maturity properties of cotton fibers, see Test Methods D1442, D1448, D1769, D2480, D3817, British Standards BS 2016, BS 3085, and ISO 2403. 1.2 This standard does not purport to address all of the safety problems, 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.