EPA Method 508 - Performance Check Solution

4-Hydroxy-2',3,5,5'-tetrachlorobiphenyl, 10mg

1-Methylpyrene-d9, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 210487-07-3

n-Pentyltri-n-butyltin,1000 µg/mL,isooctane,1mL