Primary Calibration FID (EPH) Rev 1.0 Back Catalog number: 91785 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52034 Calibration Standard Mix 2 Price on request C16173680 Phthalic acid, bis-isopentyl ester, 25mg Price on request X9138 1,4-Naphthoquinone Price on request