EPA Method 8040 - Surrogate Standard Back Catalog number: 80403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended N-MEFOSAA N-methylperfluoro-1-octanesulfonamidoacetic acid, 1.2ml x 50ug/ml, methanol Price on request 677428 Trimethyl phosphate, 250mg Price on request 71402 3,4-Dimethylphenol Price on request