Terbutryn, 100 µg/ml, Acetonitrile, 5ml

Trinitroglycerin, 100 µg/ml, Acetonitrile, 1ml

2,2',4,5,5'-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Alachlor (ring 13C6), 100ug/ml in n-Nonane, 1,2ml