Method 200.8/1638/1640 Internal Standard

EPA Method 502/524 High Conc VOC Mix #4

1,4-Dimethyl-5-propylnaphthalene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 204256-08-6

Tetrachloromethane, 100 ng/µl, 1ml