COD Calibration Standard Back Catalog number: 50451 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70092 Chrysene-d12, 1000µg/ml in Methylen Chloride, 1ml Price on request 675330 Acethion, 100 µg/ml, Cyclohexane, 1ml Price on request 79233 Tetrachloro-m-xylene Price on request