ICP-OES wavelength calibration solution LabKings alternative for: OEM 6610030000 15 Element Mix, 500 mL . K @ 500 mg/L; Al, As, Ba, Cd, Cr, Co, Cu, Pb, Mn, Mo, Ni, Se, Sr, Zn @ 50 mg/L, in 5% HNO3 + Tr HF Shelf life: 18 months