Copper - 20 PPM Back Catalog number: 50594 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674215 Fenthion-sulfone, 10mg Price on request 0365.17-K-T 2,5-Diphenyl-1,6,6a-trithiapentalene, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 103-90-5 Price on request 3446.16-100 o,p'-Methoxychlor, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 30667-99-3 Price on request