A. M. . Rohim, P. Marwoto, S. Priatmoko, and A. Syifa, “Analysis FTIR Test, Viscosity, Density, Acid Number, and Organoleptic in Bulk Cooking Oil with Packaged Cooking Oil ”, jppipa, pendidikan ipa, fisika, biologi, kimia, vol. 9, no. 5, pp. 2613–2618, May 2023.