Methylparaben, 100 µg/ml, Acetonitrile, 5ml

Individual Calibration Solutions , 200ul, nonane

D5-Atrazine, 100 µg/ml, Acetone, 1ml

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