Silver (Ag) Back Catalog number: 57147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79761 Permethrin (mix isomers), 1000µg/ml in Acetonitrile, 1ml Price on request NK-ST-A4 Native PCDD/PCDF Solution/Mixture, 1.2ml, nonane Price on request 54153 Inorganic Nutrients Price on request