4-Hydroxysulfadiazine,10 µg/mL,MeOH,1mL,

Roxithromycin-d7, 2,5mg

D12-Benzo[a]pyrene, 100 µg/ml, Acetonitrile, 1ml

Disulfoton-sulfone, 100 µg/ml, Toluene, 1ml