This frequently asked question was manufacturer-dependent for a long time, but has been regulated
in a standard since the end of the 1990s: DIN 12875, which was expanded a few years later to DIN
12875-2. A number on the corresponding dishwasher symbol indicates the highest number of wash
cycles that will be survived without damage. The standard specifies certain criteria that apply to the
number of flush cycles indicated in the symbol. If these criteria are met, the products are guaranteed
dishwasher-safe according to DIN 12875. This applies to ceramic products with fired decorations (if
the decorations were fired at at least 820 degrees C). Restrictions apply here for precious metal and
also metal decors.