Nitrate & Nitrite as N Back Catalog number: 54162 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0294.19-200-T 3-Methylchrysene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3351-31-3 Price on request 70483 2-Chloro-1,3-butadiene Price on request 1581.2-100-ME Dicyanodiamide (Cyanoguanidine), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 461-58-5 Price on request