TOC Calibration Standard

N-Ethyl-n-perfluorobutanesulfonamide (N-EtFBSA), 50μg/ml in Acetonitrile, 1ml

4-Methoxy-2,2',5'-trichlorobiphenyl, 100µg/ml in IO, 1ml

1,1-Dichloroethene, 20mg/ml in MeOH, 1ml