1.1 本试验方法包括通过干质量在实验室测定泥炭和有机土壤的纤维含量。分类 D4427 提供了本标准中使用的泥炭分类方法。 1.2 最小尺寸大于20 mm的植物材料（如根或木材）不被视为纤维。 1.3 由于该测试方法简单，不需要复杂的设备即可执行，因此特别推荐用于需要测试大量样品且矿物含量较低的常规勘测工作。 1.4 单位- 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。括号中的替代筛网名称如规范所示 E11 . 1.5 所有观察值和计算值应符合实践中确定的有效数字和舍入准则 D6026 . 1.6 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。 1.7 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 本试验方法可用于测定泥炭或有机土壤样本中纤维的数量。纤维含量是分类中确定的泥炭分类参数之一 D4427 . 它也是预测或定义这些材料的许多最终用途的一个重要参数。在这方面，纤维含量与农业和园艺最终用途（如覆盖和土壤富集）、岩土测量（如强度、压缩性和渗透性）、工业化学品用途（如蜡、活性炭和药物的生产）和能源用途（如直接燃烧、甲醇生产和气体产量）有关。 注1: 本标准产生的结果的质量取决于执行该标准的人员的能力，以及所用设备和设施的适用性。符合实践标准的机构 D3740 通常认为能够胜任和客观的测试/采样/检查等。本标准的用户应注意遵守惯例 D3740 本身并不能保证可靠的结果。可靠的结果取决于许多因素；实践 D3740 提供了一种评估其中一些因素的方法。

1.1 This test method covers the laboratory determination of the fiber content of peat and organic soils by dry mass. Classification D4427 provides the methodology to classify peat as it is used in this standard. 1.2 Pieces of plant material such as roots or wood, larger than 20 mm in smallest dimension are not considered fibers. 1.3 Because this test method is simple and does not need sophisticated equipment in order to be performed, it is especially recommended for routine reconnaissance work where large numbers of samples need to be tested and mineral contents are low. 1.4 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. Alternate sieve designations in parentheses are as provided in Specification E11 . 1.5 All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 . 1.6 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. 1.7 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 This test method is useful for determining the quantity of fibers in a peat or organic soil specimen. Fiber content is one parameter used to classify the peat as determined in Classification D4427 . It is also a significant parameter in predicting or defining the many end uses of these materials. In this regard, fiber content has been related to agricultural and horticultural end uses (such as mulching and soil enrichment), geotechnical measurements (such as strength, compressibility, and permeability), industrial chemical uses (such as production of waxes, activated carbon, and medicines), and energy uses (such as direct combustion, methanol production, and gas yields). Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective testing/sampling/inspection/etc. Users of this standard are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors.