8:2 Di-PAPS, 50µg/mL, Solvent-acetonotrile, Unit 1mL, # of units-1, Cas.no. 678-41-1

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

Whole Oil Separation Control Set (S-4015 - S-4017 + S-4012) Neat mixtures (0.25mL) of the Control mixtures 1-3, 1mL solution of the Control mixture 4 in isooctane solution

Benzo(a)pyrene