Nitrite (NO2-) as N Back Catalog number: 50627 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3308.12-100-IO 2,2',4,4',6,6'-Hexachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 33979-03-2 Price on request 674588 Fenthion-oxon-sulfone, 10.0 µg/ml, Acetonitrile, Price on request 674800 D4-Sulfamethoxazole, 10mg Price on request