In April/May 2001 all suppliers were asked to update their information sheets. In general most changes occurred concerning the persons to contact. In some cases the delivery lists were slightly expanded. In April 2004, another quick update was done by consulting the web sites of all the suppliers, which resulted in only minor changes (indicated using red font). Several suppliers have modified their logo. No attempt was made to find new suppliers. The major reason to make this update was to check for developments concerning high throughput experimentation suitable for measuring reaction kinetics. 2020: Thorough update of the from version 2004 including suppliers of high-throughput systems. The information about suppliers of thermal analysis equipment was not updated.