EPA Method 525 Internals & Surrogates Back Catalog number: 95227 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683776 trans-Permethrin, 100 µg/ml, Cyclohexane, 1ml Price on request BR-FOSA Perfluoro-1-octanesulfonamide isomeric mixture, 50µg/ml in MeOH, 1,2ml Price on request C12208500 1,4-Diazabicyclo[2.2.2]octane (DABCO), 250mg Price on request