Verapamil,1000 µg/mL,MeOH,1mL,

1,1,1,3-Tetrachlorotetradecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 865306-25-8

Mono-n-butyl phthalate (ring-1,2-13C2, dicarboxyl-13C2, 99%) 100 µg/mL in MTBE, 1,2ml

Chrysene-d12, 2000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 1719-03-5