Copper - 20 PPM Back Catalog number: 50594 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 681380 6-Benzylaminopurine, 100mg Price on request 682690 Isopropyl acetate, 1000mg Price on request 3952.3-K-ME 1,1-Dichloropropene,1000 µg/mL,MeOH,1mL, Price on request