Methods for measuring of the energy use from equipment for commercial kitchens – Part 5: Tilting frying pans and stationary frying pans
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2012

Methods for measuring the energy consumption of commercial kitchen appliances – Part 5: Tilting frying pans and stationary frying pans
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 02/01/2016