EPA Method 353.2 Nitrate & Nitrite Back Catalog number: 52120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11284.10-100-AN Thiacloprid-d4 (thiazolidinylideme-d4),100 µg/mL,acetonitrile,1mL, Price on request 675840 Dicofol, 100 µg/ml, Toluene, 5ml Price on request C10861600 2-Butanol, certified, 5ml Price on request