MCPA, 10.0 µg/ml, Acetonitrile, 10ml

Potassium (K), 1000µg/ml in 2%-HNO3/Water, 100ml

1,2,3,4,6,8,9-Heptachloro[13C12]dibenzofuran, 1.2ml x 1ug/ml, nonane

Diquat, 1000µg/ml in Water, 1ml