Certain general chapters contain a statement that the text in question is harmonized with the corresponding text of the European Pharmacopoeia and/or the Japanese Pharmacopoeia and that these texts are interchangeable. Therefore, if a substance or preparation is found to comply with a requirement using an interchangeable method or procedure from one of these pharmacopeias, it should comply with the requirements of the USP. When a difference appears, or in the event of dispute, only the result obtained by the method and/or procedure given in the USP is conclusive.