Nitrite (NO2-) as N Back Catalog number: 50303 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1316.14-10-T 3-Fluorophenanthrene, 10µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 440-40-4 Price on request 92313 EPA Method 525 Spike B Price on request 59296 Multi-Element ICP Standard Price on request