EPA Method 8240A Sys Perf Check Cmpds

2,2',3,3',4',5,6-Heptachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 52663-70-4

1,2-Dimethoxyethane, 1ml

Flurenol-butyl ester, 100 µg/ml, Ethyl acetate,