EPA Method 502/524 Fortification Solution

CLP Pesticides & PCB's Resolution Check Mix

2-Phenyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 104353-07-3

2,2',3,5-Tetrachlorobiphenyl,100 µg/mL,isooctane,1mL,