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3. [AOAC] Assn. of Official Analytical Chemist. 1990b. Official method 940.28. Fatty acids (free) in crude and refined oils. Titration method. Gaithersburg, Md.: AOAC Intl.
4. [AOAC] Assn. of Official Analytical Chemist. 1998a. Official method 981.12. pH of acidified foods. Gaithersburg, Md.: AOAC Intl.
5. [AOAC] Assn. of Official Analytical Chemist. 1998b. Official method 985.33. Vitamin C (reduced ascorbic acid) in ready-to-feed milk-based infant formula. 2,6-Dichloroindophenol titrimetric method. Gaithersburg, Md.: AOAC Intl.