Nitrite (NO2-) as N Back Catalog number: 54559 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 34421 1,1,1-Trifluoroethane Price on request 52071 Spiking Standard 5 Price on request S-4029-ASS-IO 1-Methylphenanthrene/Phenanthrene = 1:2 (0,67) 1000 + 2000 µg/ml in isooctane, 1mL pr. vial Price on request