Ultrafine copper powder with purity range 99.9998-99.9999%. The official laboratory findings systematically verified an ultra-high chemical purity benchmark of up to 99.9999% while confirming a highly uniform microscopic particle size predominantly under 5 micrometers. The copper powder has a high quality, it is small and roundish in form and size and most important, it is very uniform. 95% of all particles having the same form and size.