You may clean your Walküre hard porcelain in the dishwasher without hesitation – modern technology must not stop before table-culture. Our high quality hard porcelain adjusts to the demands of the hours all along and is prepared for all requirements. Hence you should not be concerned if your porcelain, after longer-term use, shows ”thin grey lines, scratches or marks”. That´s not an issue of a defect in your porcelain or a damage in the glace, as you will have gathered, but rather a so-called ”cutlery abrasion”.
This can be easily removed by using a customary, non-abrasive liquid detergent. You may either use a detergent for stainless steel or the special cleaning agent for porcelain ”etolit” (www.etol.de).