EPA Method 353.2 Nitrate + Nitrite Back Catalog number: 53120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 83600 EPA Method 555 Herbicide Standard Price on request 10634.12-50-T 1,2,3,6,7,8-Hexachlorodibenzofuran Price on request 9928.16-5MG 6:2 Di-PAPS-d4, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. Price on request