EPA Method 551.1 Performance Check Soln

3,4,5,11-Tetrahydroacenaphthene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 26761-12-6

2,3,3',4,5',6-Hexachlorobiphenyl ,100 µg/mL,isooctane,1mL,

1,2,3,4,6,7,8-Heptabromodibenzofuran, 1.2ml x 25ug/ml, toluene