Calibration Standard Set Back Catalog number: 52042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676316 6-Methylchrysene, 100 µg/ml, Acetonitrile, 1ml Price on request DF-247-S 2,4,7-Trichlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 95367 Formaldehyde Price on request