Copper (Cu) - 5 PPM Back Catalog number: 50592 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677175 Tetra-n-octyltin, 100mg Price on request 15900-5627-100AN1 Chlorothalonil R471811 sodium, 100μg/ml in Acetonitrile, 1ml Price on request 82410 EPA Method 8240A Matrix Spiking Standard Price on request