EPA Method 8141 Surrogate Standard Back Catalog number: 92387 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674826 Fenamiphos-sulfone, 50mg Price on request 8790.25-5UG C25 Tricyclic terpane Y, neat, Solvent-neat, Unit ca. 5µg, # of units-1, Cas.no. Price on request 9928.16-50UG 6:2 Di-PAPS-d4, neat, Solvent-neat, Unit ca. 50 µg, # of units-1, Cas.no. Price on request