QC Standard 5 Back Catalog number: 52088 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 71640 Styrene oxide Price on request DF-IS-B Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane Price on request 673473 Acrinathrin, 100 µg/ml, Ethyl acetate, 5ml Price on request