IEC 61309:1995 applies to electric deep-fat fryers for household use with capacity of up to 4 l. of oil. It defines the principal performance characteristics, test methods and guidelines for evaluation of the test results. This standard includes a shade chart developed by VAVI - Vereiniging vor de Aardappelverwerkende Industrie - (Dutch Potato Processing Industries Association) allowing the determination of the browness of French fried potatoes.
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