Selenium +99.999% 1.Purity :99.99%,99.999%,99.9999% 2.Powder, ingot, shot 3.Test Machine: ... ICP-Ms 4.Over 10 years supplying Selenium (Se)1, ... High Purity Selenium:Se-05 Grade 99.999. The content of Selenium is above 99.999%. The total content of Ag, ... Cd, Co, In, Cu, Fe, Te, Pb & Ni is bellow 1 ppm.3, Physical Size:Virgulate, Powder.4, Usage:It is ...