EPA Method 353.2 Nitrate & Nitrite Back Catalog number: 52120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681539 N-Methyl perfluorooctane sulfonamide, 10mg Price on request VHG-SDSL-500-100 Sulfur, 500µg/g (0.0500 wt%) in Diesel Fuel, 100ml Price on request 678105 Pyracarbolid, 100 µg/ml, Acetonitrile, 1ml Price on request