Fenthion, 100 µg/ml, Acetonitrile, 5ml

(+)-(S)-Chlorpheniramine maleate,1000 µg base/mL,MeOH,1mL,

2,3,4,6,7,8-Hexachloro[13C12]dibenzofuran, 1.2ml x 50ug/ml, toluene

Formothion, 100 µg/ml, Ethyl acetate, 1ml