CWA Gold Back Catalog number: 55091 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681024 Coumaphos, 10.0 µg/ml, Cyclohexane, 10ml Price on request 679277 Benzo[g,h,i]perylene, 10mg Price on request 684367 Diflufenican, 100 µg/ml, Acetonitrile, 5ml Price on request