ISO 24443:2012规定了表征防晒产品的UVA保护的体外程序。给出规格以使得能够以可再现的方式确定UVA保护的光谱吸收特性。 为了确定相关的UVA保护参数，已经创建了该方法以提供UV光谱吸收曲线，从该光谱吸收曲线可以进行许多计算和评估。该方法依赖于使用体内SPF结果缩放UV吸光度曲线

ISO 24443:2012 specifies an in vitro procedure to characterize the UVA protection of sunscreen products. Specifications are given to enable determination of the spectral absorbance characteristics of UVA protection in a reproducible manner. In order to determine relevant UVA protection parameters, the method has been created to provide a UV spectral absorbance curve from which a number of calculations and evaluations can be undertaken. This method relies on the use of in vivo SPF results for scaling the UV absorbance curve.