Copper and Manganese Back Catalog number: 50161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 31191 cis-1,2-Dichloroethene Price on request 11020.31-5UG 2?-Methyl-18?(H)-Oleanane,neat,neat,Ca. 5 µg, Price on request 70407 2,4-Dichlorotoluene Price on request