EPA Method 8260B - Purgeable Internal Std

1,2-Butanediol, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 584-03-2

1,4-Dihydroxynaphthalene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 571-60-8

Perfluorooctadecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 16517-11-6