ISO 9276-6:2008规定了颗粒形状和形态的描述和定量表示的规则和术语。为了对颗粒或颗粒系统进行更全面的描述，可以将颗粒尺寸信息与其他信息一起使用，但在大多数情况下，不能替换颗粒尺寸信息。 已经证明，对样本中所有粒子的形状进行平均是一种无效的方法。除粒度分布外，还需要其他颗粒特性的分布（见ISO 9276-1）。 代表颗粒形状的任何方法与技术应用的相关性是其使用的决定性因素。因此，ISO 9276的本部分仅限于工业应用中与物理性质相关的方法。 颗粒分析的目的是为特定应用确定最合适的表征方法。这意味着对颗粒特性与宏观产品和工艺特性（或至少是广泛经验数据数据库）之间关系的深刻理解。 形状和形态学问题通常是三维问题，但由于图像分析方法的广泛使用，ISO 9276本部分中的大多数定义实际上是针对二维的。

ISO 9276-6:2008 specifies rules and nomenclature for the description and quantitative representation of particle shape and morphology. To achieve a more comprehensive description of a particle or particle system, particle size information can be used together with other information but, in most cases, the particle size information cannot be replaced. The averaging of shape over all particles in a sample has been shown to be an ineffective approach. Distributions of other particle characteristics are required in addition to particle size distributions (see ISO 9276？1). The relevance, to technological applications, of any method of representing particle shape is the deciding factor in its use. Therefore this part of ISO 9276 is restricted to methods which can be correlated with physical properties in industrial applications. The aim of particle analysis is to determine the most appropriate characterization method for a particular application. This implies a profound understanding of the relationship between particle characteristics and macroscopic product and process properties (or at least a database of broad empirical data). Problems of shape and morphology would normally be three-dimensional problems, but most definitions in this part of ISO 9276 are in fact given for two dimensions because of the widespread use of image analysis methods.