Heraeus 7-element 3QNY/Al/Ca/Cu/Fe/Mg/Si/Zn (3QNYAlCaCuFeMgSiZn) Hollow Cathode Lamp, Aluminium Al + Ca + Cu + Fe + Mg + Si + Zn, 37 mm Standard - 80166741 (Replaces 80018133) - Click Image to Close