Copper - 20 PPM Back Catalog number: 50594 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 53094 Trace Metals 3 Price on request 0981.28-10-IO d2 C27/C28 Triaromatic Sterane, 10µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. -/205529-81-3 Price on request 1960.12-5MG 2,3',4-Tribromodiphenyl ether, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 147217-77-4 Price on request