During season one, episode one, of the television series Downton Abbey, the cook, Mrs. Patmore, has a pot of "salt of sorrel" on the kitchen preparation table that one of the servants uses to clean the brass and copper pots.
Potassium nitrate | potassium | ATP-sensitive potassium channel | potassium carbonate | Potassium channel | Potassium | Potassium dichromate | Potassium cyanide | Potassium chloride | Potassium alum | Tandem pore domain potassium channel | Potassium thiocyanate | Potassium permanganate | Potassium osmate | potassium cyanide | potassium chloride | Potassium carbonate | Potassium bromide | Potassium bitartrate |