Dimethoate, 10.0 µg/ml, Acetonitrile, 10ml

Propazin, 100μg/ml in Acetonitrile, 5ml

1,413 µS/cm conductivity solution (230mL)

1,2,3,6,7,8-Hexachlorodibenzofuran, 1.2ml x 50ug/ml, nonane