Nitrate as NO3-, 1000µg/ml in water, 100ml Back Catalog number: 54200 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 2041.4-50-ME Perfluorobutane sulfonic acid, 50ug/ml, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 59933-66-3 Price on request 677598 1,4-Dimethylnaphthalene, 10 µg/ml, Cyclohexane, Price on request 1116.16-100-TX10 3-Nitrofluoranthene-d9, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-10, Cas.no. 350820-11-0 Price on request