: Doelan is an automated tool to check the quality of produced DNA microarrays. This software is based on the execution of test suites on quality control data to validate batches of chips. The reports generated by Doelan will help microarray platforms in their quality approach such as ISO 9001 certification. Doelan application is written with Java programming language, works with a plug-in system that allows everyone to add is own validation test and is distributed under the GNU General Public License at http://transcriptome.ens.fr/doelan/.