EPA Method 625 Base/Neutrals Mix #4

Parathion-d10 (diethyl-d10), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 350820-04-1

2,3,7-Trichloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Benfluralin, 250mg