4-Hydroxybenzoic acid, 1000µg/mL in MeOH, 1ml

Oxalic acid, 250mg

3-n-Hexadecylthiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 119269-24-8

Benzo[b]chrysene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 214-17-5