d4 C27 alpha alpha alpha (20R)-Cholestane, 100µg/mL in Isooctane, 1ml

4-Methoxy-2,2',3,4',5,5',6-heptachlorobiphenyl, Please inquire, Solvent-, Unit , # of units-, Cas.no.

Internal Standard ASTM D-5307

2,3',4,4'-Tetrabromodiphenyl ether, 50µg/ml IO,1ml