EPA Method 502/524 Fortification Solution

1,4-Dichlorobutane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 110-56-5

Levamisole hydrochloride,1000 µg base/mL,MeOH,1mL,

1-Ethyl-4-methylbenzene (4-ethyltoluene, p-ethyltoluene), 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 622-96-8