EPA Method 551.1 Performance Check Soln

Sodium 1H,1H,2H,2H-[1,2-13C2]perfluorodecylphosphate, 1.2ml x 50ug/ml, methanol

2,3,7,8-Tetrachlorodibenzo-p-dioxin

3,3'-Dichlorobiphenyl ,100 µg/mL,isooctane,1mL,