In February 2012, more than 90 stakeholders from 23 countries met for an International Organization for Standardization (ISO) meeting that resulted in unanimous support among meeting participants for an International Workshop Agreement (IWA 11:2012 Guidelines for Evaluating Cookstove Performance). These interim guidelines for efficiency, total emissions, indoor emissions, and safety are a significant step forward in developing international standards. The technical content is available here.
ISO Technical Committee 285 is currently developing new standards. Until those are completed, the IWA are the interim guidelines to support collaboration and easy communication of test results