ISO 16408:2015 specifies physical and chemical requirements and test methods for oral rinses. It also specifies the accompanying information such as the manufacturer's instructions for use, marking, and/or labelling requirements. ISO 16408:2015 is not applicable to other delivery systems (e.g. mouthsprays, foams, powders). It is not intended to describe regulatory aspects, e.g. methods of prescription. ISO 16408:2015 is not applicable to oral rinses available by prescription only.