Rachmawati DO, Suswandi I, Risha N. THE VALUE OF VISCOSITY COEFFICIENT OF COOKING OIL RESULTED BY PURIFICATION BASED ON ACTIVE CHARCOAL TEMPERATURE WITH THE FALLING BALL METHOD. IPR [Internet]. 2022Feb.11 [cited 2024May18];5(1):57-63. Available from: https://ipr.unram.ac.id/index.php/ipr/article/view/140