Evaluation of Breakthrough Time Of Selected Chemical Warfare Agents Through Protection Materials Under Static Conditions Within the Interlaboratory Methods Comparison

Based on long-term experiences cooperation between the Laboratory of Toxic Compounds at the National Institute for Nuclear, Chemical and Biological Protection and the Nuclear, Chemical and Biological Defence Institute of the University of Defence in Brno an interlaboratory double-sided comparison has been established in recent time. The interlaboratory comparison of methods is one of several quality management tools according to ČSN EN ISO/IEC 17 025:2005. In the Czech Republic a commercial available comparison system for breakthrough time determination of chemical warfare agents through protection material actually does not exist. In fact the methods are somewhat narrowly focused. Several procedures for evaluation of protection materials properties to drops and steams of soman or sulphur mustard under static conditions have been performed. Detection of chemical warfare agents has been realized by using suitable chromogenic indicator. This article summarises evaluation of the realised interlaboratory comparison