Theophylline, 100μg/mL in Acetonitrile, 1ml

1,2,3,5,7,8-Hexachloronaphthalene, 1.2ml x 50ug/ml, nonane

2,3,4,5-Tetrachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Iodosulfuron-methyl sodium, 100 µg/ml, Acetonitri