Collected from the San Francisco Bay, California, USA at a depth of 5 metresCertified valuesAs. 1.36 mg/LCu .1.55 mg/LPb. 0.0090 mg/LCd . 0.048 mg/LFe .0.568 mg/LV. 2.57 mg/LCo . 0.042 mg/LMn.1.61 mg/LZn . 0.201 mg/LCr . 0.183 mg/LNi .1.23 mg/LIndicative
