Copper (Cu) - 1 PPM Back Catalog number: 50590 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673248 Demeton-S-methyl-sulfone, 10.0 µg/ml, Acetonitril Price on request N-12645-100MG Naphthalene-d8, 100mg Price on request 50283 Anions Mix - ICA-DX-721 Price on request