1.1 本试验方法包括使用烘箱干燥技术测定除油脂毛外的所有形式的普通商业和工业羊毛样品中的水分含量。 1.2 给出了含水量（接收基）和回潮率（烘干基）的计算公式。务必使用与计算中使用的基础相对应的正确项（参见 12.2.1 ). 注1: 测试方法涵盖了纺织材料含水量的一般测定 D2654 ，并在试验方法中介绍了通过甲苯蒸馏测定羊毛中水分的最佳方法 D2462 . 实践中介绍了一种用于测定羊毛中水分的羊毛取样方法 D2525 . 在试验方法中，对棉花采用了烘箱干燥法 D2495 . 1.3 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、健康和环境实践，并确定监管限制的适用性。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 试验方法 D2462 通过甲苯蒸馏测定羊毛中的水分是商业装运验收测试中测试羊毛水分的首选方法。 然而，如果买方和供应商同意，试验方法 D1576 可使用烘箱干燥法测定羊毛中的水分。按照中的指示进行比较测试 5.1.1 ，可能是可取的。 5.1.1 如果因使用测试方法时报告的测试结果的差异而产生争议 D1576 对于商业装运的验收测试，买方和供应商应进行比较测试，以确定其实验室之间是否存在统计偏差。建议为调查偏差提供称职的统计协助。 作为最低要求，双方应尽可能均匀地从大量相关类型的材料中选取一组试样。然后，应将试样以相同数量随机分配给每个实验室进行测试。两个实验室的平均结果应使用学生的 t -测试未配对数据和双方在测试开始前选择的可接受概率水平。如果发现偏差，必须找到并纠正其原因，或者买方和供应商必须同意根据已知偏差解释未来的测试结果。 5.2 本试验方法是一种简单方便的方法，用于常规过程控制、厂内评估、估计大量羊毛的含水量或不需要高度再现性的任何其他目的（见第节） 13 ).

1.1 This test method covers the determination of the amount of moisture present in ordinary commercial and industrial samples of wool in all forms except grease wool, using the oven-drying technique. 1.2 Formulas for calculating the moisture content (as-received basis) and moisture regain (oven-dried basis) are given. It is always important to use the correct term which corresponds to the basis used in the calculation (see 12.2.1 ). Note 1: The determination of moisture content for textile materials in general is covered in Test Methods D2654 , and an optimal method for determining the moisture in wool by distillation with toluene is covered in Test Method D2462 . A method for sampling wool for the determination of moisture in wool is covered in Practice D2525 . The oven-drying method has been adapted for cotton in Test Method D2495 . 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 Test Method D2462 for the determination of the moisture in wool by distillation with toluene is the preferred method for testing wool for moisture for the acceptance testing of commercial shipments. If, however, the purchaser and the supplier agree, Test Method D1576 for the determination of the moisture in wool by oven drying may be used instead. Comparative tests as directed in 5.1.1 , may be advisable. 5.1.1 In case of a dispute arising from differences in reported test results when using Test Method D1576 for acceptance testing of commercial shipments, the purchaser and the supplier should conduct comparative tests to determine if there is a statistical bias between their laboratories. Competent statistical assistance is recommended for the investigation of bias. As a minimum, the two parties should take a group of test specimens which are as homogeneous as possible and which are from a lot of material of the type in question. The test specimens should then be randomly assigned in equal numbers to each laboratory for testing. The average results from the two laboratories should be compared using Student's t -test for unpaired data and an acceptable probability level chosen by the two parties before testing is begun. If a bias is found, either its cause must be found and corrected or the purchaser and the supplier must agree to interpret future test results in the light of the known bias. 5.2 This test method is a simple and convenient method for routine process control, in-plant evaluation, estimation of moisture content of a lot of wool, or any other purpose for which a high degree of reproducibility is not necessary (see Section 13 ).