Nitrate & Nitrite as N Back Catalog number: 54521 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673348 Metazachlor, 10.0 µg/ml, Acetonitrile, 10ml Price on request 9688.8-K-AN N-Nitroso-N-ethylaniline, 1000µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 612-64-6 Price on request 50781 Alkalinity as Calcium Carbonate Price on request