EPA Method 8021B Internal Standard

Oxadiargyl, 100 µg/ml, Acetonitrile, 1ml

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Light White Oil (less than 20mg/kg S) Unit : 10mL screw-capped bottle Light White Mineral Oil Heavy White Mineral Oil (20 cSt at 40°C) (70 cSt at 40°C)

Benzo(j)fluoranthene, 10µg/mL in Cyclohexane, 10ml