ISO 28523:2009规定了从润滑油和液压油系统中动态和静态提取流体样品的方法。 在分析来自润滑油和液压油系统的液体时，正确执行取样至关重要。 为了获得可靠和可比的分析结果，必须在规定的条件和操作环境下进行取样。 当系统达到其工作温度时，从流体处于湍流状态的位置提取代表性样品。 这种方法称为动态采样。如果不可能，可以从系统罐中提取样品。这种方法称为静态采样。 ISO 28523:2009规定了与瓶内采集相关的动态和静态采样方法。 对于通过过滤套件提取样品以与“主载玻片”进行比较，请参考此类设备供应商的手册。

ISO 28523:2009 specifies methods for dynamic and static extraction of fluid samples from lubricating and hydraulic oil systems. A correct execution of the sampling is essential when analysing fluids from lubricating and hydraulic oil systems. In order to achieve reliable and comparable analysis results, the sampling must be performed under defined conditions and operating environment. When the system has reached its operating temperature, a representative sample is extracted from where the fluid is in a turbulent flow condition. This method is called dynamic sampling. If this is not possible, the sample can be extracted from the system tank. This method is called static sampling. ISO 28523:2009 specifies methods for both dynamic and static sampling in connection with collection in bottles. For extraction of samples through a filtration kit for comparison with “master slides”, reference is made to the manuals from the suppliers of such equipment.