The OECD Guidelines for the Testing of Chemicals (for the complete list, including dates of revisions, click English / French) are free publications. Since the original publication in 1981, 18 addenda have been published. In 1993, the original publication was revised and Addenda 1-5 were incorporated. The revised publication and Addenda 6-16 are available in English and French. Those interested in the Guidelines can retrieve it at OECD iLibrary. Following are the five sections; each section lists adopted Guidelines first, with links to draft Guidelines at the bottom of the page.
In addition, Guidance and Review documents, also referred to as the Monograph Series on Testing and Assessment, are available to the public free of charge (click Guidance and Review Documents/Monographs for draft Guidance and Review Documents).
For comments and questions regarding the Test Guidelines Programme, please contact firstname.lastname@example.org