本文件规定了可追溯至国家测量标准的放射性表面污染参考测量标准的特性，用于校准表面污染监测器。本文件涉及最大光子能量不超过1.5 MeV的阿尔法发射器、贝塔发射器和光子发射器。购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies the characteristics of reference measurement standards of radioactive surface contamination, traceable to national measurement standards, for the calibration of surface contamination monitors. This document relates to alpha-emitters, beta-emitters, and photon emitters of maximum photon energy not greater than 1,5 MeV.All current amendments available at time of purchase are included with the purchase of this document.