Nitrite (NO2-) as N Back Catalog number: 50449 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-23467-S 2,3,4,6,7-Pentachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 92512 PAH Standard Price on request AC-AQ20-015 Aqueous ethanol control EtOH AQ (2.0g/L), 10x1,5ml Price on request