1.1 本试验方法包括测定釉面陶瓷洁具和相关产品的60°镜面光泽。 1.2 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====== 4.1 本试验方法提供了一种确定明亮、半哑光和哑光釉面镜面光泽极限的方法。人们认识到，镜面光泽测量并不总是与光泽度的视觉排名密切相关，因为镜面光泽只是产生光泽感的几个相关外观属性之一。然而，规定的试验方法对于预期目的具有足够的准确性。 注1: 如果需要在明亮的釉面之间进行更大程度的区分，20°几何仪器将提供这种区分。 4.

1.1 This test method covers the determination of 60° specular gloss of glazed ceramic whitewares and related products. 1.2 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 ====== 4.1 This test method provides a means of establishing specular gloss limits for bright, semi-mat, and mat glazed surfaces. It is realized that specular gloss measurements do not always correlate well with visual rankings of glossiness because specular gloss is only one of several related appearance attributes that produce the sensation of gloss. However, the prescribed test method is of sufficient accuracy for the intended purpose. Note 1: If a greater degree of distinction between bright glazed surfaces is desired, the 20° geometry instrument will provide it. 4