EPA Method 300.0 Anions Mix A, 1000 µg/mL in Water, 1ml

Perfluoro-n-[1,2,3,4,6-13C5]hexanoic acid, 1.2ml x 50ug/ml, methanol

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

2-Phenylphenol, 100 µg/ml, Ethyl acetate, 5ml