2,4-D 13C6, 100µg/ml in Acetone, 1ml

Fenhexamid, 100 µg/ml, Acetonitrile, 5ml

Acetochlor, 100 µg/ml, Acetone, 1ml

2,3,4,6-Tetrabromo[13C6]phenol, 1.2ml x 100ug/ml, toluene