1.1本指南涵盖了一种测试技术，可用于比较家用洗涤产品或家用洗涤程序的清洁和美白或增白性能。该测试是在受控条件下，在配对比较的基础上，在实验室的家用清洗设备中对自然污染的家庭物品进行的。通过评估一套匹配的衣服，一次两件，可以订购多达四种洗涤剂。如果需要除人类专家外的仪器读数，请使用第2节中引用的标准。 1.2没有单一的评估可以给出洗衣产品的整体性能。单一测试只能预测产品在选择用于评估的特定条件下的比较情况，不能期望反映其在许多其他可能的使用条件下的比较性能。 为了评估产品性能的许多方面，始终需要进行一系列评估。虽然有实验室方法测量性能的各个方面（例如，再沉积、溶解度），但有必要在受控但实际的家庭清洗条件下进行确认测试，以更紧密地模拟消费者体验。 1.2.1可能影响家用洗涤产品或程序性能的变量，以及在设计测试以进行评估时应考虑的变量包括:纤维类型、织物结构、织物饰面、待清洗物品的类型、负载大小、土壤或污渍的种类和水平、水硬度、水温、预处理、各种助洗剂的存在，洗涤液中产品的浓度、添加产品的顺序、水、衣物、洗涤时间、搅拌速度和类型、旋转速度、干燥或熨烫方法，以及判断物品的条件。 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 本指南定义了条件的最低组合，为家用洗涤产品或程序的清洁和美白或增白性能的视觉评估提供了合理的依据。为了提供更具预测性和更广泛的评估范围，或评估特殊产品类型或最终用途，应通过扩展特定变量来增加测试。 本指南适用于评估洗衣产品的清洁、增白或增白性能。本指南不涉及产品其他一些重要性能方面的评估，例如: 对织物寿命或家用洗衣设备的影响，或对物理性能（如可浇注性、灰尘或溶解性）的影响。然而，可以通过适当且相对较小的程序变化来评估对织物颜色、手感或气味的影响。

1.1 This guide covers a testing technique that may be used for comparing the cleaning and whitening or brightening performance of home laundering products or home laundering procedures. This testing is done on naturally soiled family items in home laundering equipment in a laboratory under controlled conditions on a paired comparison basis. As many as four detergents have been put into order by evaluating the set of matched garments two at a time. Use the standards referenced in Section 2 if instrumental readings in addition to human panelists are desired. 1.2 There is no single assessment that will give the overall performance of laundry product. A single test can only predict how products compare under the particular conditions chosen for evaluation and cannot be expected to reflect their comparative performance under the many other possible conditions of use. A series of assessments is always necessary in order to evaluate the many aspects of product performance. While there are laboratory methods of measuring individual aspects of performance (for example, redeposition, solubility), it is necessary to conduct confirming tests under controlled but practical home laundering conditions to simulate consumer experience more closely. 1.2.1 Among the variables that can affect the performance of home laundering products or procedures and that shall be considered in designing tests for their evaluation are: type of fiber, fabric construction, fabric finish, types of items to be washed, load size, kind and level of soils or stains, water hardness, water temperature, pretreatments, the presence of various laundering aids, the concentration of products in the laundering solution, sequence of addition of products, water, laundry, wash time, rate and type of agitation, spin speed, drying or ironing methods, and conditions under which the items are judged. 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== This guide defines a minimum combination of conditions to provide a reasonable basis for the visual evaluation of cleaning and whitening or brightening performance of home laundering products or procedures. To provide a more predictive and broader scope of evaluation or to assess special product types or end uses, testing should be augmented by extending specific variables. This guide is suited to the evaluation of the cleaning, whitening or brightening properties of laundry products. This guide does not address the evaluation of some other important performance aspects of products such as: the effect on fabric life or home laundry appliances, or the physical properties such as pourability, dustiness, or solubility. However, the effect on color, feel, or odor of fabrics may be evaluated by appropriate and relatively minor changes in procedure.