EPA Method 8325 Surrogate Standard Back Catalog number: 82483 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended D-N-MEFOSA-M N-methyl-d3-perfluoro-1-octanesulfonamide, 50µg/ml in MeOH, 1,2ml Price on request 672983 Estriol, 100mg Price on request 71087 Methyl laurate Price on request