Nitrite (NO2-) as N Back Catalog number: 59478 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 51097 Paraffins - ASTM 1319 Price on request 31057 EPA Method 552.1 - Surrogate Standard Price on request 1250.5-1ML Cyclopentane, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 287-92-3 Price on request