Kerosene as TPH in Water

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

Perfluoro-n-[1,2-13C2]hexadecanoic acid, 50µg/ml in MeOH, 1,2ml

Siloxane - Mix 6, 100µg/ml in Acetone, 5ml