Copper (Cu) - 7 PPM Back Catalog number: 50744 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1111.13-100-T 2,7-Dinitrofluorene, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 5405-53-8 Price on request SCP150-021-003 CONOSTAN Standard S-21, 100 ppm, 100g Price on request C17358300 Tetrachloroethene, 1ml Price on request