EPA Method 8141 Standard

1,4-Difluorobenzene

Sodium perfluoro-1-heptanesulfonate, 1.2ml x 50ug/ml, methanol

4-Bromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 101-55-3