EPA Method 531.1 - Performance Check Solution

Quinoxyfen, 100 µg/ml, Acetonitrile, 1ml

Alachlor OA, 1000µg/ml in Acetonitrile, 1ml

n-Octacosane, ?13C: -29.85, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 630-02-4