4,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml

Pyraflufen monohydrate (free acid), 100 µg/ml, Me

4-Hydroxyamphetamine HCl, 1000µg/ml in MeOH, 1ml

Sulfur Calibration Mixtures: Di-n-butyl sulfide in Heavy 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)