Multi-Element Solution 4

Diisobutyl phthalate, 100 µg/ml, Acetone, 5ml

2,3,3',4,5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Benzo(a)anthracene-d12, 1000µg/ml in Methylene Chloride, 1ml