ISO 12800:2017给出了通过体积法或重量法测定粉末上吸附的氮量来测定制造的二氧化铀粉末的比表面积的指南，并且可以应用于其他类似材料，例如U3O8、UO2-PuO2粉末和具有类似表面积的其他主体，例如粉末颗粒或生粒，前提是满足所述条件。包括使用其他吸附气体的改性。 只要预期值在1 m2/g和10 m2/g之间，该方法就是相关的。

ISO 12800:2017 gives guidelines on the determination of the specific surface area of as-fabricated uranium dioxide powder by volumetric or gravimetric determination of the amount of nitrogen adsorbed on the powder, and can be applied to other similar materials, e.g. U₃O₈, UO₂-PuO₂ powders, and other bodies with similar surface areas, e.g. powder granules or green pellets, provided that the conditions described are fulfilled. Modifications using other adsorbing gases are included. The method is relevant as long as the expected value is in the range between 1 m²/g and 10 m²/g.