EPA Method 8260B - Purgeable Internal Std

Arochlor 1248 , 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-10, Cas.no. 12672-29-6

2,3',4'-Trichlorobiphenyl (= 2',3,4-),100 µg/mL,isooctane,1mL,

4,4'-Dibromobenzophenone, 250mg