EPA Method 625 Base/Neutrals Mix #2

2,5,7-Trimethylbenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 16587-65-8

4-Phenylbutyric acid, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 1821-12-1

1,2-Dimethylnaphthalene