Calibration Standard Kit Back Catalog number: 52090 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 45121 Fluorobenzene Price on request 679178 5-Chloro-1-methyl-4-nitroimidazole, 100mg Price on request 679577 Picric acid, 100 µg/ml, Acetonitrile, 10ml Price on request