Do not use abrasive sponges or scouring agents for cleaning. We
also advise you not to use cleaning agents containing solvent or
acid, limescale removers, household vinegar and cleaning agents
with acetic acid in them.
Clean the fitting with a little soap and moist cloth only, then
simply rinse off and wipe dry. You can avoid lime spots by drying
the fitting each time it is used. If lime deposits do occur, remove
them with GrohClean, our environment-friendly cleaning liquid.
GrohClean is available form your supplier.