Refractory Elements Standard: Al, B, Cr, Hf, Mo, Nb, Si, Ta, Ti, V, W, Zr @ 100 µg/mL in 5% HCl, tr. HF

Refractory Elements Standard: Al, B, Cr, Hf, Mo, Nb, Si, Ta, Ti, V, W, Zr @ 100 µg/mL in 5% HCl, tr. HF