1. [AOAC] American Organization of Analytical Chemists International. 1995. Modified AOAC Official Method 962.16. Sulphurous acid (total) in food. Modified Monier-Williams Method. In Cunniff, P. editor. 16 th ed, VA. p 26–27.
2. [AOAC] American Organization of Analytical Chemists International. [date unknown]. Appendix F: guidelines for standard method performance requirements, 2016 AOAC international. http://www.eoma.aoac.org/app_f.pdf.
3. Codex Alimentarius. 2017. Guidelines on performance criteria for methods of analysis for the determination of pesticide residues in food and feed. CAC/GL 90-2017. http://www.fao.org/fao-who-codexalimentarius/sh-proxy/en/?lnk=1&url=https%253A%252F%252Fworkspace.fao.org%252Fsites%252Fcodex%252FStandards%252FCAC%2BGL%2B90-2017%252FCXG_090e.pdf.