EPA Method 8270C - B/N Matrix Spiking Solution

2,3',4,5-Tetrachlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 32598-11-1

2',4',5'-Trichloro-4-[13C12]biphenylol, 1.2ml x 50ug/ml, toluene

Fenoxaprop-P-ethyl, 100 µg/ml, Acetonitrile, 5ml