TFA; Trifluoroacetic acid, 99,9%, 250g

Phosphamidon, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 13171-21-6

Perfluoro-n-[1,2,3,4,5,6,7-13C7]undecanoic acid, 1.2ml x 50ug/ml, methanol

EPA Method 8040 - Surrogate Standard