Nitrite as (NO2-) Back Catalog number: 50402 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C-157N 2,3,3',4,4',5'-Hexachlorobiphenyl, 5mg Price on request 2542.14-K-ME 5-Chloro-2-(methylamino)benzophenone, 1000µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1022-13-5 Price on request 50110A TOC Calibration Standard Price on request