Picaridin, 10.0 µg/ml, Ethyl acetate, 10ml

2,3,6,7-Tetrachloro[13C12]biphenylene, 1.2ml x 50ug/ml, nonane

Paraquat dichloride hydrate, 100mg

2,3-Benzofluorene, 1000µg/ml in methylene chloride, 1ml