EPA Method 353.2 Nitrate + Nitrite Back Catalog number: 53120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 96215 Organic Acids Mix Price on request 0024.16-200-T Benzo[b]naphtho[1,2-d]furan, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 205-39-0 Price on request 680442 alpha-HCH, 100 µg/ml, Methanol, 1ml Price on request