EPA Method 8260 - Purgeable Internal Standard

2,3,4,5-Tetrabromobenzoic acid [13C6 ring], 1.2ml x 50ug/ml, methanol

2,3-Dichlorobiphenyl ,100 µg/mL,isooctane,1mL,

Naphthalene, 10 µg/ml, Cyclohexane, 10ml