Caffeine, 100 µg/ml, Methanol, 1ml

5,5'-Difluoro-3,3',4,4'-tetrachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

Organochlorine Pesticides

Trichloroethene, 2000µg/ml in MeOH, 1ml