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2. European Pharmacopoeia, 6th ed., Limit Tests 2.4.24, Identification and Control of Residual Solvents, Council of Europe, Strasbourg, 2007.
3. Japanese Pharmacopoeia, 15th ed., General Tests, Processes and Apparatus 2.46, Residual Solvent Test, Society of Japanese Pharmacopoeia, Tokyo, 2006.
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5. Pharmacopoeia of the People's Republic of China, Edition 2005, vol. III: Appendix VIII P, Residual Solvents Test, The State Pharmacopoeia Commission of PR China, Beijing, 2005.