EPA Method 8310 Surrogates, 50µg/ml in MeChl, 1ml

Perfluorobutylphosphonic Acid, 50mg

Endothall-3,4,4,5,5,6-d6 hydrate (93% D),100 µg/mL (as water-free acid),MeOH,1mL,

4-Isobutylbenzoic acid, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 38861-88-0