COD Calibration Standard Back Catalog number: 50241 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-12367-S 1,2,3,6,7-Pentachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 92991 Chlorinated Organics Standard Price on request 72008 Potassium sorbate Price on request