EPA Method 8141 Surrogate Standard Back Catalog number: 92387 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1178.14-10MG 9,10-Anthraquinone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 84-65-1 Price on request 92332 Resource Exploration Standard #2 Price on request 3412.10-100-AN Fonofos, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 944-22-9 Price on request