Nitrite (NO2-) as N Back Catalog number: 50627 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2005.12-100-IO 2,2',3,4,4',5,5'-Heptachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 35065-29-3 Price on request 98403 IP 391-95 Calibration Level 3 Price on request BB-30 2,4,6-Tribromobiphenyl, 1.2ml x 50ug/ml, nonane Price on request