Hexachlorobenzene, 1.2mL x 100ug/mL, nonane

Dichloromethane, 20mg/mL in MeOH, 1ml

Betulin diacetate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 1721-69-3

EPA Method 551.1 Surrogate Standard