Isobutene Back Catalog number: 72431 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673356 Cycloxydim, 10 µg/ml, Acetonitrile, 10ml Price on request 673531 2,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 5TDWD Combined Window Defining/TCDD Resolution Mix, 1.2ml, nonane Price on request