为工业液体润滑剂和相关流体建立粘度分类系统，包括用作润滑剂、液压油、电气油和其他应用的矿物油。运动粘度测定的常用方法是ISO 3104中规定的方法。可能有一些纯化学品和天然产物用作润滑剂，不属于该类别。

Establishes a system of viscosity classification for industrial liquid lubricants and related fluids including mineral oils used as lubricants, hydraulic fluids, electrical oils and for other applications. The usual method for kinematic-viscosity determination is that specified in ISO 3104. There may be some pure chemicals and naturally occurring products, used as lubricants, which will not fall within the classification.