Indan Back Catalog number: 32881 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 98555 Formaldehyde (1 ppm) Price on request 79429 N-(n-Butylbenzene) sulfonamide Price on request DF-LCS-B200 Mass-Labelled PCDD/PCDF Solution/Mixture, 1.2ml , nonane Price on request