Butachlor ESA sodium salt, 100µg/ml in MeOH, 1ml

TFNA, 100 µg/ml, Acetonitrile, 1ml

2,2',3,3',5,5'-Hexachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Aqueous Ethanol Standard (1.0g/l), 10 x 1,2ml