COD Calibration Standard Back Catalog number: 51255 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 30040 EPA Method 515.1 Underivatized Price on request 96869 Heptachlor epoxide Price on request 1895.18-K-IO Hydrindantin (reduced form of ninhydrin), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 5103-42-4 Price on request