13C4-Fipronil, 100 µg/ml, Acetonitrile, 1ml

γ-1,2,5,6,9,10-Hexabromo[13C12]cyclododecane, 1.2ml x 50ug/ml, toluene

Amidosulfuron, 10.0 µg/ml, Acetonitrile, 10ml

2-Methoxy-2',3',5,5',6'-pentachlorobiphenyl, 100µg/ml in IO, 1ml