EPA Method 353.2 Nitrate + Nitrite Back Catalog number: 53120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended S-4141-KIT-8X10ML Nitrogen Calibration Set-High Boiling Solvents Units: 1x1mL ampoules or 10mL screw-capped bottle Nitrogen introduced using Carbazole Catalogue No. Concentration Matrix: isooctane mg/kg (ppm) S-4141-0 Blank S-4141-03 Price on request 676364 2-Methylimidazole, 100mg Price on request 83596 EPA Method 515.1 Analytes - Underivatized Price on request