EPA Method 531.1 - Performance Check Solution

p-Terphenyl-d14, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 1718-51-0

trans-Nonachlor, 10 µg/ml, Cyclohexane, 10ml

Pyrimethamine, 250mg