EPA Method 507 - Performance Check Solution

Arochlor 1248 , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 12672-29-6

Hexachloro-1,3-butadiene-13C4,100 µg/mL,isooctane,1mL,

2,8-Dichlorodibenzo-p-dioxin, 1.2ml x 50ug/ml, nonane