This book is a guide and reference to a range of chemical requirements that are common within multiple countries. With the focus on the European Union (EU) and the United Kingdom (UK) and where appropriate are included other major authorities such as the United States as an additional reference. It is clearly not possible to easily cover all chemical requirements globally due to the variations across countries and to keep up with the changes that may occur to any regulation in any one country. There is also some basic advice on how to deal with or find out why your product may not be fully in compliance with the appropriate regulation. This means why do you have excess substance present in a product or material, understanding the why will assist in the solving of how to resolve any failures in achieving regulatory requirements.