Multi-Element Check Standard

2-Ethyl-1-methylbenzene (2-ethyltoluene, o-ethyltoluene), 1000µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 611-14-3

a,2,4-Trichlorotoluene

Malathion, 10.0 µg/ml, Ethyl acetate, 10ml