Robenidine HCl, 100µg/mL in Acetone:MeOH, 1ml

Methamidophos, 10.0 µg/ml, Acetonitrile, 10ml

2,3,7,8-Tetrabromo[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Tetra-n-butyltin, 1000 µg/ml, Methanol, 5ml