Toluene, certified, 5ml

Benzo(b)furan, certified, 25mg

Ethanol standard in serum,4.0g/L,serum, 1.5mL

n-Dodecane-d26, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16416-30-1