EPA Method 507 Surrogate Standard Back Catalog number: 19049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674647 AMPA, 100mg Price on request 2874.11-50-ME Perfluoroundecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2050-94-8 Price on request PFRS-025S TCPP, 100µg/ml in Toluene, 1ml Price on request