D3-Ibuprofen, 100 µg/ml, Acetonitrile, 1ml

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

THM’s - Purgeables Mix #2, 200µg/ml in MeOH, 1ml

D7-Prometryn, 10mg