EPA Method 8240A Calibration Check Compounds

(1S,2R,3S,4R)-rel-1,2,3,4-Tetrahydro-1,2,3,4-chrysenetetrol , , Solvent-, Unit , # of units-, Cas.no. 127592-29-4

Heptachlor-exo-epoxide, 10 µg/ml, Acetonitrile,

Imazaquin, 100mg