Copper - 20 PPM Back Catalog number: 50594 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2390.6-K-IPX5 Phenol, OD, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-5, Cas.no. 1003-66-3 Price on request 72252 Sodium propionate Price on request 83591 2,3,5,6-Tetrachloroterephthalic acid Price on request