ISO 13163规定了使用液体闪烁计数（LSC）测定所有类型水样品中的铅-210（210Pb）活度浓度。对于原水和饮用水，样品应脱气，以尽量减少氡-222（222Rn）中210Pb的长入。使用当前可用的液体闪烁计数器，该试验方法可测量小于20 mBq⋅l-1至50 mBq⋅l-1范围内的210Pb放射性浓度。当样品体积从0.5升到1.5升时，这些值可以在180分钟到720分钟之间计数。更高的210Pb活性浓度可以通过稀释样品或使用更小的样品等份或两者来测量。实验室有责任确保本试验方法适用于所测水样。

ISO 13163 specifies the determination of lead-210 (210Pb) activity concentration in samples of all types of water using liquid scintillation counting (LSC). For raw and drinking water, the sample should be degassed in order to minimize the ingrowth of 210Pb from radon-222 (222Rn). Using currently available liquid scintillation counters, this test method can measure the 210Pb activity concentrations in the range of less than 20 mBq⋅l-1 to 50 mBq⋅l-1. These values can be achieved with a counting time between 180 min and 720 min for a sample volume from 0,5 l to 1,5 l. Higher 210Pb activity concentrations can be measured by either diluting the sample or using smaller sample aliquots or both. It is the laboratory's responsibility to ensure the suitability of this test method for the water samples tested.