Isopropalin, 100 µg/ml, Ethyl acetate, 5ml

2,2',3,4',6'-Pentachlorobiphenyl (= 2,2',3',4,6-),100 µg/mL,isooctane,1mL,

Diphenyl ether, 1.2ml x 50ug/ml, nonane

EPA Method 502/524 Surrogate Standard #1