EPA Method 8141 Surrogate Standard Back Catalog number: 92387 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2517.8-100MG Caffeine,neat,neat,100mg, Price on request 680079 Amitriptyline hydrochloride, 100mg Price on request 1958.12-2K-AN Decafluorobiphenyl, 2000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 434-90-2 Price on request