2,4-D 13C6, 100µg/ml in Acetone, 1ml

Sodium perfluoro-1-[1,2,3,4-13C4]octanesulfonate, 1.2ml x 50ug/ml, methanol

Triisobutylphosphate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 126-71-6

1,3,4,7-Tetrachlorodibenzofuran , 1.2ml x 50ug/ml, nonane