EPA Method 525 Internals & Surrogates

Di-n-butyl phthalate-3,4,5,6-d4, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-5, Cas.no. 93952-11-5

11-cis,14-cis-Eicosadienoic acid , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 5598-38-9

Azaspirazide 3, 1.25 µmol/L , Solvent-methanol, Unit 0.5mL, # of units-1, Cas.no.