COD Calibration Standard Back Catalog number: 50255 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 672974 Sulfamethazine, 250mg Price on request 673877 Chloridazon-desphenyl, 10.0 µg/ml, Acetonitrile, Price on request L15940000CY Pentachloroaniline, 10µg/mL in Cyclohexane, 10ml Price on request