EPA Method 500 Series Internal Std #4

1,2-Dimethyl-4-ethylbenzene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 934-80-5

3-Chloro-1,2-propandiol-2-monoarachidate, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.

cis-Chlordane (alpha), 10 ng/µl, 10ml