Ammonium Standard: NH4+, 1000µg/ml in Water, 100ml

1,2,4,5-Tetrachlorobenzene-d2, 1000µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 1198-57-8

Naltrexone (base, anhydrous), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 16590-41-3

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