EPA Method 525 Internals & Surrogates

Trimellitic acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 528-44-9

Bis(2-ethylhexyl-d17) tetrabromo[13C6]phthalate, 1.2ml x 50ug/ml, toluene

Methyl viologen-d8 dichloride (rings-d8), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 347841-45-6