Interference Standard 3 Back Catalog number: 53050 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677768 Pentafluoropropionic acid, 250mg Price on request Y0000424 Atracurium besylate, 120mg Price on request DF-LCS-A40 Mass-Labelled PCDD/PCDF Solution/Mixture , 1.2ml , nonane Price on request