We're selling ultrafine copper powder with purity 99.999 %. PMU specifications. Isotopic composition is that of natural copper: - 69.1% of Cu-63 and 30.9% of Cu-65 - Cu purity of 99.999 % All testing reports are available upon submission of LOI. List of impurities corresponds to TU 1793-011-50316079-2004. Quantity available - 5 tons. Annual capacity - 20 tons. Price - Highly negotiable basis the order quantity and market price. If you are interested in purchasing please send us your inquiry.