4,4'-DDT, 10.0 µg/ml, Cyclohexane, 10ml

Phosphorous Standards Phosphorus in Light White Mineral Oil, 20Cst Tri-n-butylphosphate, 99+% (Chiron product nr. 1399.19) CAS [126-73-8] Matrix: Isooctane , 20cSt Units: 1x25mL, 1x100mL Isooctane

Methoprene, 100 µg/ml, Acetonitrile, 1ml

EPA Method 8141/1657 Surrogate Standard