Copper (Cu) - 2 PPM Back Catalog number: 50591 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 52154 Continuing Calibration Verification Standard (CCV) Price on request 674463 Chloroxynil, 25mg Price on request 9524.14-K-T Anthraquinone-d8, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 10439-39-1 Price on request