COD Calibration Standard Back Catalog number: 50255 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94558 Deuterated Nitrosoamines Price on request 677129 Heptachlor endo-epoxide, 10.0 µg/ml, Cyclohexane, Price on request 678477 Esfenvalerate, 10.0 µg/ml, Acetonitrile, 10ml Price on request