QUALITY CONTROL STANDARD 1, For Use in EPA Method 200.7. Contains the Following Elements (concentrations in ug/mL), Ag-100, Al-100, B-100, Ba-100, K-1000, Na-100 and Si-50 in 5% HNO3, Ricca
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quality control standard 1, for use in epa method 200.7. contains the following elements (concentrations in ug/ml), ag-100, al-100, b-100, ba-100, k-1000, na-100 and si-50 in 5% hno3, ricca
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QUALITY CONTROL STANDARD 1, For Use in EPA Method 200.7. Contains the Following Elements (concentrations in ug/mL), Ag-100, Al-100, B-100, Ba-100, K-1000, Na-100 and Si-50 in 5% HNO3, Ricca