beta-Endosulfan, 100 µg/ml, Ethyl acetate, 5ml

GC/MS Hexachlorobenzene Mixture 1356,6 Hexachlorobenzene [118-74-1] 50µg/ml

Ethanol standard in water,0.3g/L,water, 1.5mL

Ethephon-hydroxy, 10mg