Primary Calibration FID (EPH) Rev 1.0 Back Catalog number: 91785 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674091 Benthiavalicarb-isopropyl, 10mg Price on request 94725 4,4’-Oxydianiline Price on request 50460 Copper AA Standard (Cu) Price on request