Certified valuesCd . 0.34 mg/kg Hg .0.067 mg/kg Pb. 40.2 mg/kgCo . 12.1 mg/kg Mn.970 mg/kgCu . 69.7 mg/kg Ni .64.5 mg/kgIndicative values for Cr, ZnAqua regia soluble contentCertified valuesCd . 0.25 mg/kg Pb .25.7 mg/kgNi. 61.1 mg/kg Zn .93.3 mg/kgIndica