EPA Method 8260 Internal Standard - Revised Back Catalog number: 21013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681407 N-Ethyl-heptadecafluorooctane sulfonamide, 100mg Price on request 95282 Potassium butylxanthate (as butylxanthate acid) Price on request 675974 Metolachlor ESA sodium salt, 100 µg/ml, Acetonitr Price on request