Retention Time Marker Solution Iowa OA-2

1,2,3,4-Tetrachloro[13C12]dibenzofuran (97.5%), 1.2ml x 48.75ug/ml, toluene

Atrazine-desethyl, 100 µg/ml, Acetonitrile, 5ml

(5)Helicene, neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 188-52-3