EPA Method 353.2 Nitrate & Nitrite Back Catalog number: 52120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 18-B-36-CCZ 1,8-Dibromo-3,6-dichloro-9H-carbazole, 1.2ml x 50ug/ml, nonane Price on request 2421.6-K-IP 4-Chlorophenol-2,3,5,6-d4, OD,1000 µg/mL,isopropanol,1mL, Price on request F0006 Iron(II) Ethylenediammonium Sulfate 4H2O, 25g Price on request