EPA Method 353.2 Nitrate & Nitrite Back Catalog number: 52120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677114 D3-(±)-Naproxen, 10mg Price on request 679450 Metolachlor, 100 µg/ml, Methanol, 1ml Price on request 675301 Chlorfenvinphos, 100 µg/ml, Acetonitrile, 5ml Price on request