Methabenzthiazuron, 100µg/ml in Acetonitrile, 5ml

1,2,8,9-Tetrachloro(13C12)dibenzo-p-dioxin, 1.2mL x 50ug/mL, toluene

n-Nonadecane, ?13C: -34.60, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 629-92-5

Atrazine, 100 µg/ml, Methanol, 1ml