ISO/DIS 12799 http://www.iso.org/ ISO standards and projects ISO - International Organization for Standardization 240 http://www.iso.org/iso/logo_iso.gif http://www.iso.org ISO/DIS 12799 ISO/DIS 12799 - Nuclear energy -- Determination of nitrogen content in UO2, (U,Gd)O2 and (U,Pu)O2 sintered pellets - Inert gas extraction and conductivity detection method This document reached stage 40.99 on 2013-04-08 , TC/SC: ISO/TC 85/SC 5, ICS: 27.120.30 Standards under development