COD Calibration Standard Back Catalog number: 50255 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95698 Crude Oil Standard n-Hydrocarbons C5-C9 Price on request 9053.6-K-IP 4-Chlorocatechol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 2138-22-9 Price on request 33042R EPA Method 531.1 - Analytes Mixture Price on request