Chloroform, 100µg/ml in MeOH, 5ml

Piperonyl butoxide, 100 µg/ml, Ethyl acetate, 5m

1,3,4,6,8-Pentachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Fenchlorphos-oxon, 100µg/ml in Acetonitrile, 1ml