EPA Method 624 Standard

2,2',3,3',4,4',5-Heptachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 35065-30-6

tert-Butanol-d9

2,3,3',4',5-Pentachloro-4-methoxybiphenyl, 1.2ml x 50ug/ml, nonane