Dobarganes MC, Márquez-Ruiz G. Quality control of used frying fats. Validity of quick tests to substitute polar compound determination. Grasas aceites [Internet]. 1995Jun.30 [cited 2024Apr.20];46(3):196-201. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/924