Copper - 20 PPM Back Catalog number: 50594 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72044 Vinyl chloride-d3 Price on request 681258 Creatinine, 1000mg Price on request 2365.15-K-IO 4-Nonylphenol, mixture of isomers, Type B, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 84852-15-3 Price on request