EPA Method 525 Internals & Surrogates

4-Aminobiphenyl-d9, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 344298-96-0

4-Methoxybenzoic acid methyl ester, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 121-98-2

WI-7.6-30 Butyl-Ethyl Paraben Standard