Formaldehyd-DNPH, 100 µg/ml, Acetonitrile, 5ml

4-Methylbenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 14315-11-8

Benzo[b]fluoranthene-d12, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 93951-98-5

Ibuprofen, 100 µg/ml, Methanol, 1ml