EPA Method 8260B Purgeable Internal Standard

2,3,3',4',5,6-Hexachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 74472-44-9

Procaine hydrochloride,1000 µg base/mL,acetonitrile,1mL,

8-Bromo-1-naphthoic acid, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 1729-99-3