Chemical Oxygen Demand Back Catalog number: 59447 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53088 QC Standard 5 Price on request 676371 Heptadecafluorononanoic acid, 100mg Price on request 3301.24-K-IO Methyl 14-cis-tricosenoate , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 50995-25-0 Price on request