EPA Method 353.2 Nitrate + Nitrite Back Catalog number: 53120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 50040 Potassium Nitrate Price on request 676983 D4-Triclocarban, 5mg Price on request 1356.6-100-DC Hexachlorobenzene, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 118-74-1 Price on request