Nitrite (NO2-) as N Back Catalog number: 54504 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 19494 EPA Method 524 & 624 - Internal Standard Price on request 2656.12-100-IO 3-Fluoro-2,2',5-trichlorobiphenyl, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 0927.20-K-IO 2-Methylnonadecane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1560-86-7 Price on request