EPA Method 8140/8141 Analytes Back Catalog number: 81400 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53145 Method 200.8/1638/1640 Internal Standard Price on request 82442 4-Methyl-2-pentanone Price on request 14800-0160-50ME5 Trifluoromethanesulfonic acid, 50µg/ml in MeOH, 5ml Price on request