... 99.99% Testing impurities: Na, Al, Mg, Si, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn. ... 99.999% Testing impurities: Na, Al, Mg, Si, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn. Total ... 99.9999% Testing impurities: Na, Al, Mg, Si, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn. Total ... preparation of III-elements chemical compound semiconductor, high purity metal and germanium, dopant of mono-crystal silicon etc. Package ...