Hollow Cathode Lamps Zinc - Zn Hollow Cathode Lamps Zinc - Zn Single Element Lamps 1.5" (37mm) diameter fit in a wide range of instruments:- Varian, Analytic Jena, GBC, Hitachi , Shimadzu , TJA, Thermo Unicam, Thermo Elemental, Buck, Phillips, Leeman Labs, Chemito and many others 2 pin socket Wavelength: 213.9nm Maximum Current: 15mA ONE YEAR WARRANTY