My engineer/mathematician/computer scientist son François found promotional image of BRITA Replacement Water Filter has incorrect mapping of elements.
Pb = Copper
Other images have correct mapping.
Pb = LEAD
Cu = COPPER
Unlike lead (Pb) which is extremely toxic, copper (Cu) is an essential mineral which is naturally present in some foods and is available as a dietary supplement, i.e., Costco's "Kirkland Signature Daily Multi Vitamins & Minerals Tablets".
