Copper (Cu) - 7 PPM Back Catalog number: 50744 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0233.42-1MG [bc,ef,hi,kl,no,qr]-Hexabenzocoronene,neat,neat,1mg, Price on request 8837.9-K-IO 2-Butyl-3-methylpyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no. Price on request 3428.12-100-AN Isofenphos-des-N-isopropyl Price on request