Copper - 20 PPM Back Catalog number: 50594 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 675301 Chlorfenvinphos, 100 µg/ml, Acetonitrile, 5ml Price on request 72199 D-(+)-Malic acid Price on request LA11203000CY oxy-Chlordane, 10 ng/µl, 1ml Price on request