EPA Method 8141 Standard Rev 1 Back Catalog number: 98131 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended L20635000AL Benzo(a)pyrene, 10 ng/µl, 10ml Price on request 9346.11-10MG Phenazone-d3 (N-methyl-d3) Price on request 92752 Pesticide Standard Price on request