EPA Method 525 Internals & Surrogates

Propetamphos, 100 µg/ml, Ethyl acetate, 5ml

Benzo[b]fluoranthene-d12, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 93951-98-5

Flecainide-d4 acetate,neat,neat,2.5mg,