Fenitrothion-oxon, 100 µg/ml, Ethyl acetate, 1ml

Tri-n-butyl phosphate-d27, 1.2ml x 50ug/ml, toluene

2-Mercaptobenzimidazole, 1000mg

4-Ethylphenol, 100 µg/ml, Acetonitrile, 1ml