Copper (Cu) - 1 PPM Back Catalog number: 50590 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70795 Phorate sulfoxide Price on request 0090.8-1ML 1-Octanethiol, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 111-88-6 Price on request 681995 Phenylglyoxylic acid, 100mg Price on request