Nitrite (NO2-) as N Back Catalog number: 50120 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-I200 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 2193.8-50-ME Perfluorooctane sulfonic acid, potassium salt,50 µg/mL,MeOH,1mL, Price on request 71041 Acetyl chloride Price on request