ISO 9696:2017规定了一种测定非盐水中不挥发至350°C的α放射性核素总α放射性的方法。 该方法适用于原水和饮用水。 应用范围取决于水中总可溶性盐的数量和计数器的性能特征（背景计数率和计数效率）。 实验室有责任确保该方法适用于测试的水样。

ISO 9696:2017 specifies a method for the determination of gross alpha activity in non-saline waters for alpha-emitting radionuclides which are not volatile up to 350 °C. The method is applicable to raw and potable waters. The range of application depends on the amount of total soluble salts in the water and on the performance characteristics (background count rate and counting efficiency) of the counter. It is the laboratory's responsibility to ensure the suitability of this method for the water samples tested.