COD Calibration Standard Back Catalog number: 50451 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8743.18-100-T 4-Chloroterphenyl, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. Price on request 70920 p-Cresidine Price on request 73462 Carfentrazone-ethyl Price on request