EPA Method 8040 - Surrogate Standard

2-(2,4-Dihydroxybenzoyl)benzoic acid, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2513-33-9

Phenkapton, 10.0 µg/ml, Acetonitrile, 10ml

n-Valeraldehyde-PFBOA derivative, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no.