Internal standard 2, 2000g/ml in MeOH, 1ml

n-Perfluorododecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 307-55-1

3,3'-Dimethylbenzidine,100 µg/mL,acetonitrile,1mL,

2,4-D n-butyl ester