Parathion-methyl, 100 µg/ml, Acetonitrile, 5ml

1,1,1,3,10,11-Hexachloroundecane,100 µg/mL,acetone,1mL

12-Methylbenz[a]anthracene,200 µg/mL,toluene,1mL,

Diisohexyl phthalate (Technical grade)