Nitrate (NO3-) as N Back Catalog number: 59364 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9928.16-50UG 6:2 Di-PAPS-d4, neat, Solvent-neat, Unit ca. 50 µg, # of units-1, Cas.no. Price on request 3117.10-50-IO 2,3-Dibromonaphthalene, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 13214-70-5 Price on request 31083 EPA Method 507/525 Analytes Mix #2 Rev.1 Price on request