ISO 4259-1:2017规定了实验室间研究（ILS）的设计方法和研究规定的试验方法的精度估计计算方法。特别是，它定义了相关的统计术语（第3条）、ILS规划中确定试验方法精度所采用的程序（第4条）以及根据此类研究结果计算精度的方法（第5条和第6条）。 ISO 4259-1:2017中的程序是专门为石油和石油相关产品设计的，这些产品通常被认为是均质的。然而，ISO 4259中描述的程序- 1:2017也适用于其他类型的同质产品。在将ISO 4259-1:2017应用于同质性假设可能受到质疑的产品之前，有必要进行仔细调查。

ISO 4259-1:2017 specifies the methodology for the design of an Interlaboratory Study (ILS) and calculation of precision estimates of a test method specified by the study. In particular, it defines the relevant statistical terms (Clause 3), the procedures to be adopted in the planning of ILS to determine the precision of a test method (Clause 4), and the method of calculating the precision from the results of such a study (Clauses 5 and 6). The procedures in ISO 4259-1:2017 have been designed specifically for petroleum and petroleum related products, which are normally considered as homogeneous. However, the procedures described in ISO 4259-1:2017 can also be applied to other types of homogeneous products. Careful investigations are necessary before applying ISO 4259-1:2017 to products for which the assumption of homogeneity can be questioned.