Certified valuesAl . 1.7 mg/LCr.0.79 mg/LPb. 0.29 mg/LAs. 1.07 mg/LCu .6.2 mg/LSe. 0.74 mg/LBa. 0.73 mg/LFe .24.2 mg/LSb. 0.35 mg/LBe. 0.27 mg/LLi.0.39 mg/LSr . 1.7 mg/LBi . 0.63 mg/LMn.6.1 mg/LTl . 0.33 mg/LCd . 0.48 mg/LMo.0.17 mg/LU . 0.25 mg/LCo . 0.2