Method for evaluating filtration filter

A method for evaluating a filtration filter, which is a method for evaluating a filtration filter used for recycling used fats and oils, the method comprising:

• an imaging step of capturing an image of fats and oils filtered by the filtration filter or an image of the fats and oils diluted with a solvent, together with a color chart, by an imaging device;
• an image information acquisition step of acquiring image information of the imaged fats and oils or image information of the fats and oils diluted with the solvent based on image information of the imaged color chart;
• a fats and oils deterioration determination step of determining a deterioration state of the fats and oils based on the image information;
• and
• a filtration filter evaluation step of evaluating filtration performance and deterioration inhibiting performance of the filtration filter based on a determination result of the fats and oils deterioration determination step.